tom  Tian-Jian Hsu (Tom)

   Associate Professor

 

   205 Ocean Lab.

   Center for Applied Coastal Research

   Civil and Environmental Engineering

   University of Delaware,

   Newark, DE 19716

   Email: thsu@udel.edu

 

 

Last revised: September 2014.

 

 

Ph.D.  Cornell University, Civil and Environmental Engineering, 2002.

M.S.   Cornell University, Civil and Environmental Engineering, 1999.

B.S.    National Taiwan University, Naval Architecture and Ocean Engineering, 1994.

 

Dr. Hsu's research interest is to understand various non-cohesive and cohesive sediment transport processes and their applications to the morphodynamics and the ecosystem dynamics in fluvial, estuarine and coastal environments. Dr. Hsu and his group members focus on fundamental mechanisms in sediment transport, such as boundary layer turbulence, turbulence-sediment interaction, inter-granular interaction (rheology), and flocculation via detailed numerical simulations. Significant research efforts also emphasize various applications. For example, Hsu's group studies the hydrodynamics and morphodynamics of beaches and inlets during regular and extreme (e.g., storm) conditions. Hsu's group is also interested in understanding the processes controlling the fate of fine terrestrial sediment in the coastal ocean, which has critical implications to carbon sequestration, the health of coastal habitat, waterway navigation, and transport of contaminants.

 

Professional Experience

Publication

Current and Past Projects

Honors and Awards

Simulation Data/Open source codes

 

 

Professional Experience:

Associate Professor, University of Delaware                                                        Sep 2010 – Present

Civil and Environmental Engineering.

Assistant Professor, University of Delaware                                                         Aug 2008 – Aug 2010

Civil and Environmental Engineering.

Adjunct Scientist, Woods Hole Oceanographic Institution.                                  May 2006 – Present

Applied Ocean Physics and Engineering.

Assistant Professor, University of Florida                                                             Jan 2006 – Aug 2008

Civil and Coastal Engineering.

Assistant Scientist, Woods Hole Oceanographic Institution.                                Sep 2004 – Dec 2005

Applied Ocean Physics and Engineering.

Postdoctoral Scholar, Woods Hole Oceanographic Institution.                                     Sep 2003 – Aug 2004

Applied Ocean Physics and Engineering.

Postdoctoral Fellow, University of Delaware.                                                        Sep 2002 – Aug 2003

 

 

Research Interests:

Sediment transport, Environmental Fluid Mechanics, Coastal Engineering, Multi-phase and particle-laden flow.

 

 

Honors and Awards:

National Science Foundation Faculty Early Career Development (CAREER) Award, 2007.

Coastal Ocean Institute Postdoctoral Scholarship, Woods Hole Oceanographic Institution, 2003.

DeFrees Graduate Research Fellowship, Cornell University, 2001 – 2002.

Undergraduate Research Student Paper Award, National Institute of Engineer, Taiwan, 1994.

 

 

Selected Publications

1.      Chang, K-A, Hsu, T-J, and Liu, P. L.-F. (2001) Vortex generation and evolution in water waves propagating over a submerged rectangular obstacle. Part I: Solitary waves, Coast. Eng., 44(1), 13-36.

2.      Hsu, T-J, Sakakiyama, T. and Liu, P. L.-F., (2002) A numerical model for wave motions and turbulence flows in front of a composite breakwater, Coast. Eng., 46(1), 25-50.

3.      Hsu, T-J, Jenkins, J.T. and Liu, P. L.-F, (2003) On two-phase sediment transport: dilute flow, J. Geophys. Res., 108(C3), 3057, doi:10.1029/2001JC001276,

4.      Hsu, T.-J., Jenkins, J.T., and Liu, P. L.-F, (2004) On two-phase sediment transport: sheet flow of massive particles. Proc. Roy. Soc. Lond. (A), 460(2048), 2223-2250.

5.      Hsu, T-J and Hanes, D.M., (2004) The effects of wave shape on sheet flow sediment transport, J. Geophys. Res., 109(C5), C05025, doi:10.1029/2003JC002075.

6.      Hsu, T-J and Liu, P. L-F., (2004) Toward Modeling Turbulent Suspension of Sand in the Nearshore, J. Geophys. Res., 109(C6), C06018, doi:10.1029/2003JC002240.

7.      Chang, K-A, Hsu, T-J, and Liu, P. L.-F., (2005) Vortex generation and evolution in water waves propagating over a submerged rectangular obstacle. Part II: Cnoidal waves, Coastal Engineering, 52(3), 257-283.

8.      Amoudry, L., Hsu, T-J, and Liu, P. L.-F. (2005) Schmidt number and near-bed boundary condition effects on a two-phase dilute sediment transport model, J. Geophys. Res., 110(C9), C09003, doi:10.1029/2004JC002798.

9.      Hsu, T.-J., Raubenheimer, B. (2006) A numerical and field study on inner-surf and swash sediment transport, Cont. Shelf Res., 26, 589-598.

10.  Hsu, T.-J., Elgar, S. and Guza, R. T., (2006) Wave-induced sediment transport and onshore sandbar migration, Coast. Eng., 53, 817-824.

11.  Hsu, T-J, Traykovski P. A., and Kineke, G. C., (2007) On modeling boundary layer and gravity driven fluid mud transport, J. Geophys. Res., 112, C04011, doi:10.1029/2006JC003719.

12.  Hsu T.-J., Yu, X., (2008) Sand transport under nearshore wave and current and its implication to sandbar migration, Nonlinear Wave Dynamics, Selected paper of the symposium hold in honor of Prof. Philip L.-F. Liu’s 60th birthday, Editor: P. Lynett, World Scientific Publishing.

13.  Son, M., and Hsu, T.-J. (2008) Flocculation model of cohesive sediment using variable fractal dimension, Environmental Fluid Mech., 8, 55-71.

14.  Amoudry, L., Hsu, T.-J., and Liu, P. L.-F., (2008) Two-phase model for sand transport in sheet flow regime, J. Geophys. Res., 113, C03011, doi:10.1029/2007JC004179

15.  Kennedy, A. B., Slatton K. C., Hsu. T.-J., Starek, M., and Kampa, K, (2008) Hurricane-induced sandwave in the nearshore ocean, Marine Geology, 250, 276-280.

16.  Bhaganagar, K., and Hsu, T.-J., (2009) Direct numerical simulation of flow over 2D and 3D ripples and implication to sediment transport: steady flow, Coastal Eng., 56(3), 320-331.

17.  Hsu, T.-J., Ozdemir C. E., Traykovski P. A., (2009) High resolution numerical modeling of wave-supported gravity-driven fluid mud transport, J. Geophys. Res., 114, C05014, doi:10.1029/2008JC005006.

18.  Son, M., and Hsu, T.-J., (2009) The effect of variable yield strength and variable fractal dimensional on flocculation of cohesive sediment, Water Res., 43, 3582-3592.

19.  Scott N. V., Hsu, T.-J., Cox, D., (2009) Steep wave, turbulence, and sediment concentration statistics and their implications to sediment transport, Cont. Shelf Res., 29, 2303-2317.

20.  Pedrozo-Acuña, A., Torres-Freyermuth, A., Zou, Q., Hsu, T.-J., Reeve, D. E., (2010) Diagonostic investigation of impulsive pressures induced by plunging breakers impinging on gravel beaches, Coastal Eng., 57, 252-266.

21.  Yu, X, and Hsu, T.-J., and Hanes, D. M. (2010) Sediment transport under wave groups- the relative importance between wave shape and boundary layer streaming, J. Geophys. Res., 115, C02013, doi:10.1029/2009JC005348.

22.  Ozdemir, C. E., T.-J. Hsu, S. Balachandar, (2010) Simulation of fine sediment transport in oscillatory boundary layer, Journal of Hydro-environment Research, 3, 247-259.

23.  Torres-Freyermuth, A., and Hsu, T.-J., (2010) On the dynamics of wave-mud interaction: a numerical study, J. Geophys. Res., 115, C07014, doi:10.1029/2009JC005552.

24.  Safak, I., A. Sheremet, M.A. Allison, and T.-J. Hsu, (2010) Bottom turbulence on the muddy Atchafalaya Shelf, Louisiana, USA, J. Geophys. Res., 115, C12019, doi:10.1029/2010JC006157.

25.  Ozdemir, C. E., Hsu, T.-J., Balachandar, S., (2010) A numerical investigation of fine particle laden flow in oscillatory channel: the role of particle-induced density stratification, J. Fluid Mech., 665, 1-45.

26.  Son, M., and T.-J. Hsu, (2011) Idealized study on cohesive sediment flux by tidal asymmetry, Environmental Fluid Mechanics, 11(2), 183-202, DOI 10.1007/s10652-010-9193-9.

27.  Son, M., and T.-J. Hsu (2011) The effects of flocculation and bed erodibility on modeling cohesive sediment resuspension, J. Geophys. Res., Vol. 116, C03021, doi:10.1029/2010JC006352.

28.  Snyder, P. J. and T.-J. Hsu (2011) A numerical investigation of convective sedimentation, J. Geophys. Res., 116, C09024, doi:10.1029/2010JC006792.

29.  Ozdemir, C. E., T.-J. Hsu, and S. Balachandar, (2011) A numerical investigation of lutocline dynamics and saturation of fine sediment in the oscillatory boundary layer, Journal of Geophysics Research, 116, C09012, doi:10.1029/2011JC007185.

30.  Hsu, T.-J., S.-N. Chen, A. S. Ogston, (2012) On the landward and seaward mechanisms of fine sediment transport across intertidal flats in the shallow water region – A numerical investigation, Continental Shelf Research, doi:10.1016/j.csr.2012.02.003.

31.  Yu, X., Hsu, T.-J., Jenkins, J. T., Liu, P. L.-F., (2012) Predictions of vertical sediment flux in oscillatory flows using a two-phase, sheet flow model. Advances in Water Res., 48, 2-17.

32.  Sahin, C., I. Safak, T.-J. Hsu, A. Sheremet, (2013) Observations of Sediment Stratification on the Muddy Atchafalaya Shelf, Louisiana, USA, Marine Geology, 336, 24-32.

33.  Yu, X., T.-J. Hsu, S. Balachandar, (2013) Convective instability in sedimentation-Linear stability analysis, Journal of Geophysics Research, 118(1), 256-272.

34.  Hsu, W. Y., Hwung, H. H., T.-J. Hsu, Torres-Freyermuth, A., Yang, R. Y., (2013) An experimental and numerical study on wave-mud interaction, J. Geophys. Res., 118(3), 1126-1141.

35.  S.-C. Chen, R. W. Geyer, T.-J. Hsu, (2013) A numerical investigation of the dynamics and structure of hyperpycnal river plumes on sloping continental shelves, J. Geophys. Res., 118(5), 2702-2718.

36.  Hetland, R. D., and Hsu, T.-J. (2013) Freshwater and sediment dispersal of large river plumes, in “Biogeochemical Dynamics at Large River-Coastal Interfaces: Linkages with Global Climate Change”, Editors: Thomas S. Bianchi, Mead A. Allison, and Wei-Jun Cai, Cambridge University Press, p55-85.

37.  Ozdemir, C. E., Hsu, T.-J., Balachandar, S., (2013) A Direct numerical simulation study on bottom boundary layer turbulence under a single solitary wave: instability mechanisms, flow transience and characteristics of flow turbulence, J. Fluid Mech., 731, 545-578.

38.  Yu, X., C. E. Ozdemir, Hsu, T.-J., Balachandar, S., (2013) Turbulence Modulations due to Sediment-induced Density Stratification and Rheology during Fine Sediment Transport in an Oscillatory Channel - a Numerical Investigation, Journal of Waterway, Port, Coastal, and Ocean Engineering, 140(2), 160-172.

39.  Yu, X., Hsu, T.-J., Balachandar, S., (2014) A spectral-like turbulence-resolving scheme for fine sediment transport in bottom boundary layer, Computers and Geosciences, 61, 11-22.

40.  Hsu, H.-C., A. Torres-Freyermuth, H.,-H., Hwung, T.-J. Hsu, P.-C. Kao, (2014) Numerical and Experimental study of dam-break flood propagation and its implication to sediment erosion, Journal of Hydraulic Research, DOI:10.1080/00221686.2013.857365.

41.  Ozdemir, C. E., Hsu, T.-J., Balachandar, S., (2014) Direct numerical simulations of transition and turbulence in Stokes boundary layer, Phys. Fluids, 26, 045108 (2014); doi: 10.1063/1.4871020.

42.  Torres-Freyermuth, A., Hsu, T.-J., (2014) On the mechanism of low-frequency wave attenuation by muddy seabeds, Geophys. Res. Lett., 41(8), 2870-2875, doi:10.1002/2014GL060008.

43.  Kranenburg, W. M., Hsu, T.-J., Ribberink, J. S., (2014) Two-phase modeling of sheet-flow beneath waves and its dependence on grain size and streaming, Advances in Water Resources, 72, 57-70.

44.  Chen, J., Shi, F., Hsu, T.-J., Kirby, J., (2014) A quasi-3D numerical model for nearshore hydrodynamic, sediment transport and morpholydnamic evolution, Coastal Engineering, 91, 200-212.

45.  Zhou, Z., Sangermano, J., Hsu, T.-J., Ting, F. C. K., A numerical investigation of wave-breaking-induced turbulent coherent structure under a solitary wave, J. Geophys. Res., in press.

 

 

 

Current Research Projects:

 

1.     A 3D Coupled Euler-Lagrangian Numerical Modeling Framework for Poly-dispersed Sediment Transport Simulations

PI: Tian-Jian Hsu

Sponsor: Office of Naval Research

Duration: June 2014~May 2016

2.     Collaborative Research: Large-scale laboratory investigation and numerical modeling of sheet flow sediment transport dynamics across a surf zone sand bar

PI: J. Puleo; Tian-Jian Hsu serves as co-PI.

Sponsor: National Science Foundation

Duration: Feb 2014~Jan 2017

3.     Collaborative Research: The interaction of waves, tidal currents and river outflows and their effects on the delivery and resuspension of sediments in the near field

PI: Jim Kirby; Tian-Jian Hsu serves as co-PI.

Sponsor: National Science Foundation

Duration: Sep 2013~ Aug 2016

4.     The Trapping, Storage, and Resuspension of Sediments in the Columbia River Estuary and Near Field Plume (RIVET II)

PI: Tian-Jian Hsu (with co-PI F. Shi and J. Kirby)

Sponsor: Office of Naval Research

Duration: Dec 2012~ Nov 2014

5.     NEESR: Tsunami Induced Coherent Structures and their Impact on our Coastal Infrastructure

PI: Tian-Jian Hsu (with Diane Foster (UNH), Patrick Lynett (USC))

Sponsor: National Science Foundation (subcontract from UNH)

Duration: Oct 2011~ Sep 2015

 

 

 

Past Research Projects:

 

1.     Collaborative Research: Physics of lutoclines and laminarization extracted from turbulence-resolved numerical investigations on sediment transport in wave-current bottom boundary layer

PI: Tian-Jian Hsu

Sponsor: National Science Foundation (OCE)

Duration: Sep 2011 – Aug 2014

 

2.     Interactions of Waves, tidal currents and riverine outflow and their effects on sediment transport (RIVET I -data analysis)

PI: Tian-Jian Hsu (with Co-PI F. Shi)

Sponsor: Office of Naval Research

Duration: Oct 2012~March 2014

3.     A Numerical Modeling Framework for Cohesive Sediment Transport Driven by Waves and Tidal Currents

PI: Tian-Jian Hsu; Co-investigator: C. E. Ozdemir.

Sponsor: Office of Naval Research (Littoral Sciences and Optics)

Duration: Oct 2010 – June 2013

 

4.     Interactions of Waves and River Plume and their Effects on Sediment Transport at River Mouth

PI: Tian-Jian Hsu; Co-PI: Fengyan Shi

Sponsor: Office of Naval Research (Littoral Sciences and Optics)

Duration: Nov. 2009 – June 2013

 

5.     Collaborative Research: The dynamics of sediment-laden river plume and initial deposition off small mountainous rivers

    PI: Tian-Jian Hsu, Co-PI: James Kirby

   Sponsor: National Science Foundation (OCE)

   Duration: Sep 2009 – Aug 2013

 

6.      CAREER: 3D Multiphase Sediment Transport Modeling Framework

PIs: Tian-Jian Hsu

Sponsor: National Science Foundation (OCE-Physical Oceanography)

Duration: 07-12

 

7.     Using Wave-Current Observations to Predict Bottom Sediment Processes on Muddy Beaches

        PI: Tian-Jian Hsu; Collaborative project with UF (PI-Sheremet).

        Sponsor: Office of Naval Research (Littoral Sciences and Optics)

        Duration: Nov. 2010 – Oct. 2012

 

8.     High Resolution Numerical Modeling of Cohesive Sediment Transport and Evolution of Bed Properties at Mudflats

PI: Tian-Jian Hsu

Sponsor: Office of Naval Research (Coastal Geosciences)

Duration: 07-11

 

9.     Preliminary Investigations on the Fate of Terrestrial Sediments in the Coastal Ocean Discharged From Taiwanese Small Mountainous Rivers

PIs: K.-K. Liu et al. (Lead by National Central University of Taiwan and another 3 Taiwanese Universities and Institutions). Hsu is one of the international participants.

Sponsor: Office of Naval Research (ONR-Global and Coastal Geosciences)

Duration: 08-10

 

10.NOPP - Community Sediment Transport Model

      PIs: C. Sherwood (USGS), W. R. Geyer (WHOI), et al. 

      Sponsor: NOPP (subcontract from WHOI)

      Duration: 06-09

 

11.A Fluid Mud Transport Model in Multi-dimensions

PI: Tian-Jian Hsu, Co-PI: P. Traykovski (WHOI)

Sponsor: Office of Naval Research

Duration: Oct 2006 – Sep 2008

 

12.CROSSTEX – Wave breaking, boundary layer processes, the resulting sediment transport and beach profile evolution

       PIs: Tian-Jian Hsu, John Trowbridge (WHOI); Collaborate with another 6 institution, 8 PIs.

       Sponsor: Office of Naval Research (Coastal Geosciences)

       Duration: 05-08

 

13.Collaborative Research: Coastal Modeling Management and Integration (NSF-ITR)

   PIs: Britt Raubenheimer (WHOI), Tian-Jian Hsu; Collaborate with Patrick Lynett (Texas A&M), Phil Liu (Cornell).

   Sponsor: National Science Foundation (CBET)

   Duration: 05-08

 

14.Study Complex Flow Through District’s Hydraulic Structure by CFD Modeling 

PIs: Tian-Jian Hsu, Kirk Hatfield (UF)  

Sponsor: South Florida Water Management District; USGS

Duration: 06-09

 

15.Scouring Around District’s Hydraulic Structures

   PIs: Tian-Jian Hsu 

   Sponsor: South Florida Water Management District; USGS

   Duration: 06-07

 

16.Effect of Fluid Mud on Bottom Boundary Layer Dynamics and Sediment Fluxes at Mud Flats

      (ONR Tidal Mud Flats DRI, Phase #1, FY07)

 

17.Parameterization of a Two-phase Model and Application to Nearshore Morphology

      PIs: Steve Elgar (WHOI), Tian-Jian Hsu, Dan Hanes (USGS); Collaborate with James Kirby (U. Delaware)  

      Sponsor: Office of Naval Research

      Duration: 03-05

 

 

Teaching Activities:

Ocean Fluid Dynamics – CIEG 639

   Term                                             Credits

Fall 2014                                                4

 

Freshman Design – CIEG 161

   Term                                             Credits                                      

Spring 2012                                            3                                                     

Spring 2013                                            3

Spring 2014                                            3                                                   

 

Fluid Mechanics Lab – CIEG 306

   Term                                              Credits                                      

Spring 2011                                            1                                                     

Spring 2012                                            1                                                     

 

Transport and Mixing Processes – CIEG 678

   Term                                              Credits                                      

Fall 2011                                                3                                                         

Fall 2012                                                3                                                         

Fall 2013                                                3                                                         

 

Physics of Cohesive Sediment – CIEG 670

   Term                                              Credits                                     

Fall 2010                                                3                                                      

Spring 2013                                            3                                                

 

Coastal Engineering Seminar – CIEG 865

   Term                                               Credits                                  

Spring 2011                                            1                                               

Spring 2012                                            1                                               

 

 

Professional Affiliation and Service:

American Society of Civil Engineer (ASCE).

American Geophysical Union (AGU).

American Physical Society (APS).

 

·         Associate Editor of Journal of Geophysical Research – Ocean, 2011- present.

·         National Science Foundation (NSF) Panel, 2009, 2010, 2012, 2013

·         International Scientific Committee member, Symposium on Two-phase Modeling for Sediment Dynamics in Geophysical Flows, IAHR-AIRH, 2011, 2013.

·         Scientific Committee member, International Conference on Multiphase flow 2010 (ICMF-2010), May 30 – June 4, 2010, Tampa, FL.

·         Convener for 2010 Ocean Science Meeting Special Session on Advances in Coupled Models of Coastal Sedimentary Dynamics and Morphology. Feb 22-26, Portland, Oregon, USA.

·         Scientific committee member, International Symposium on Sediment Transport and Sedimentation on Asian Continental Margins. March 23-29, 2009, National Sun Yat-sen University, Kaohsiung, Taiwan.

·         Organizing committee member, International Workshop on Sediment Transport in Taiwanese Rivers-Coastal Seas and Other Coastal Systems, Nov 3-5, 2008. National Central University, Jungli, Taiwan.

·         Judge, Lincoln Middle School Science Fair (Physics Category), December, 2007.

·         Convener for the 2006 AGU Fall Meeting Special Session on New Algorithms and Models for Fluvial and Coastal Sediment Transport and Surface Dynamics, San Francisco, December, 2006.

·         Convener for the Nearshore Processes Session in 2006 Ocean Science Meeting, American Geophysical Union, Honolulu, Hawaii, February, 2006.

 

 

Invited Presentations:

·         Selected topics on fine (cohesive) sediment transport and sand (non-cohesive) transport in the coastal environment”, Kavli Institute for Theoretical Physics, University of California, Santa Barbara, October 21, 2013.

·         Wave-breaking-induced turbulent coherent structures and their interaction with the bed – A 3D numerical investigation”, Johns Hopkins University, Center for Environmental and Applied Fluid Mechanics Seminar, October 4, 2013.

·         Wave-breaking-induced turbulent coherent structures and their interaction with the bed – A 3D numerical investigation”, Woods Hole Oceanographic Institution, COFDL seminar series, August 9, 2013.

·         “On turbulence modulation due to the presence of fine sediment in the bottom wave boundary layer – a numerical investigation” Invited talk in AGU Meeting of the Americas, Session on Progress in Turbidity Current Research, May 14, 2013, Cancun, Mexico.

·         “A numerical investigation on fine sediment transport in the oscillatory bottom boundary layer and its implication to muddy seabed states”, invited talk in the spring departmental seminar series, Civil and Environmental Engineering, University of Texas at San Antonio, January 18, 2013.

·         “Understanding the state of the muddy seabed - a numerical study utilizing multiphase flow approach”, invited talk in Session: Modeling developments for sediment transport and other multiphase flow, 2012 AGU Fall Meeting, San Francisco, CA, USA, December 3~7, 2012.

·         Interactions of Waves, Tidal Currents and Riverine Outflow and their Effects on Sediment Transport” Office of Naval Research Littoral Geosciences and Optics RIVET II project meeting on the Mouth of Columbia River, Denver, CO, September 13-14, 2012.

·         “A 3D Numerical Investigation of Fine Sediment Transport in an Oscillatory Channel and its Field Implications” Office of Naval Research Littoral Geosciences and Optics Peer Review, Denver, CO, September 11-12, 2012.

·         “A 3D Numerical Investigation of Fine Sediment Transport in an Oscillatory Channel and its Field Implications”, invited to weekly seminar of Institute of Oceanography, National Taiwan University, Taipei, Taiwan, August 24th, 2012.

·         “On the Formation of Hyperpycnal Flow from Riverine Outflow with Low Sediment Concentration”, invited to weekly seminar of Tainan Hydraulic Laboratory, National Cheng-Kung University, Tainan, Taiwan, August 22nd, 2012.

·         “On the Formation of Hyperpycnal Flow from Riverine Outflow with Low Sediment Concentration”, invited to COFDL seminar, Applied Ocean Physics and Engineering, Woods Hole Oceanographic Institution, August 10, 2012.

·         “A 3D investigation on fine sediment transport in an oscillatory channel”, presented as 33rd International Conference on Coastal Engineering, Santander, Spain, July 1st~6th, 2012.

·         “Turbulence-resolved numerical investigation on fine sediment transport in wave bottom boundary layer - Physics of lutocline and laminarization” invited talk in Workshop on Environmental and Extreme Multiphase Flows (NSF-funded), University of Florida, Gainesville, FL, March 14~16, 2012.

·         On the occurrence of low concentration hyperpycnal flow “, 2012 Ocean Science Meeting, Session: Sediment Transport and Deposition in Lakes, Estuaries, and Shallow Shelves, Feb. 21st, Salt Lake City, Utah, USA.

·         “Initial deposition and wave resuspension of fine sediment in the coastal environment – a numerical study”. Invited to POSE seminar, College of Earth, Ocean and Environment, University of Delaware, Feb 10, 2012. 

·         “On wave-driven fine sediment transport and its implication to fluid mud processes on the continental shelves”, International Workshop on Coastal Observations and Sediment Transport in Coastal Zones, National Central University, Taiwan, June 27~28, 2011.

·         “Fine sediment transport driven by oscillatory channel flow”, Taiwan Hydraulic Laboratory, National Cheng-Kung University, Taiwan, June 24, 2011.

·         “On wave-driven fluid mud and its applications”, Coastal Engineering and Processes Laboratory (LIPC) of the Engineering Institute Campus Yucatán, National Autonomous University of Mexico, Merida, Mexico, June 8, 2011.

·         “A two-phase sheet flow model and its application to wave-induced sediment transport”, Symposium on Two-phase Modelling for Sediment Dynamics in Geophysical Flows, Chatou, France, April 26-28, 2011.

·         “On wave-driven fluid mud and its application”, Coastal/Oceanographic Engineering Seminar, University of Delaware, March 1, 2011.

·         “The trapping and delivery of fine sediment in the coastal environment”, Summer Seminar Series, Naval Research Laboratory, Stennis Space Center, MS, July 14, 2010. 

·         “Sediment trap – the role of buoyancy driven flow in trapping and delivering of fine sediment in the coastal environment”, Mini Source to Sink Workshop, National Taiwan University, June 24, 2010, Taipei, Taiwan.

·         “High resolution numerical modeling of cohesive sediment transport in tide-dominated estuaries”, invited talk in special session on Tidal Flats: Hydrodynamics and Morphodynamics of Macrotidal Estuarine and Beach Environments, 2010 Ocean Science Meeting, Portland, Oregon, Feb 22-26, 2010.

·         “The trapping and delivery of fine sediment in coastal environment”, Environmental Engineering Seminar, Cornell University, Feb 4, 2010.

·         “The role of turbulence modulation in wave-induced fine sediment transport ”, Coastal Ocean Fluid Dynamics Laboratory Seminar, Woods Hole Oceanographic Institution, Jan 15, 2010. 

·         “Effects of Flocculation on modeling cohesive sediment transport”, ONR Tidal Flat Symposium, Boston, MA, Oct 28-30, 2009.

·         “The trapping and delivering of fine sediment in coastal environment”, Research Center of Ocean Environment and Technology, National Cheng-Kung University, Tainan, Taiwan, Aug 14th, 2009.

·         “Sediment trap - the role of buoyancy-driven flow in trapping and delivering sediment in the coastal environment”, invited lecture in Gordon Research Conference, Coastal Ocean Circulation, Colby-Sawyer College, New London, NH, June 7-12, 2009.

·         “Facts about Taiwan’s coastal ocean that you need to know”, Taiwan Study Association, Rutgers University, Piscataway, New Jersey, April 24, 2009. (invited presentation to general public).

·         “A numerical study on wave-mud interaction”, National Cheng-Kung University, Tainan Hydraulics Laboratory, Tainan, Taiwan, March 27th, 2009.

·         “Understanding sediment source to sink – on modeling several critical processes in the nearshore”, 2009 International Sediment Transport and Sedimentation Symposium, Kaohsiung, Taiwan, March 24, 2009.

·         “On several critical processes in understanding sediment source to sink”, National Central University, Jungli, Taiwan, March 20, 2009.

·         “Understanding the fate of river-borne sediment in the coastal ocean”, RISE Program Workshop, University of Delaware, Feb 21, 2009. (invited presentation to undergraduate students from underrepresented groups).

·         “Critical processes in understanding the fate of terrestrial sediment in the coastal ocean”, Johns Hopkins University, Environmental Fluid Mechanics Seminar, Feb 20, 2009.

·         “High resolution numerical modeling of cohesive sediment transport and evolution of bed properties at mudflats”, Office of Naval Research Tidal Flat DRI annual meeting, December 17, 2008, San Francisco.

·         “A numerical modeling framework for fine sediment transport in estuary and continental shelf”, presented at the International Workshop on Sediment Transport in Taiwanese Rivers-Coastal Seas and Other Coastal Systems, Nov 3-5, 2008. National Central University, Jungli, Taiwan.

·         “Numerical modeling of cohesive sediment transport processes in estuary and continental shelf”., Woods Hole Oceanographic Institution, Coastal Ocean Fluid Dynamic Laboratory (COFDL) seminar, Aug 2008.

·         “Numerical modeling of cohesive sediment transport processes in estuary and continental shelf”. Massachusetts Institute of Technology, Environmental Fluid Mechanics Seminar Series, Civil and Environmental Engineering, Apr 10, 2008.

·         “Numerical modeling of cohesive sediment transport processes in estuary and continental shelf”. University of Delaware, Civil and Environmental Engineering, March 2008.

·         “High resolution numerical modeling of cohesive sediment transport in estuary and continental shelf”, National Central University, Institute of Hydrological and Ocean Sciences, Jhongli, Taiwan, Feb 22nd 2008.

·         “High resolution numerical modeling of cohesive sediment transport in estuary and continental shelf”, Taiwan-US Source to Sink Resource Workshop, Kaohsiung, Taiwan, Feb. 2008.

·         “High resolution numerical modeling of cohesive sediment transport in estuary and continental shelf”, National Taiwan University, Department of Engineering Science and Ocean Engineering, Taipei, Taiwan, Dec 28th 2007.

·         “High resolution numerical modeling of cohesive sediment transport in estuary and continental shelf”, National Cheng-Kung University, Tainan Hydraulics Laboratory, Tainan, Taiwan, Dec 27th 2007.

·         “High resolution numerical modeling of cohesive sediment transport in estuary and continental shelf”, National Sun Yat-sen University, Institute of Applied Ocean Physics and Undersea Technology, Kaohsiung, Taiwan, Dec 21st, 2007.

·         Sediment transport mechanics investigated by a multiphase flow approach - current status and challenges”, invited lecture in Gordon Research Conference, Coastal Ocean Modeling , Colby-Sawyer College, New London, NH, June 17-22, 2007.

·         “CROSSTEX – Wave breaking, boundary layer processes, the resulting sediment transport and beach profile evolution”, Florida State University, Office of Naval Research Progress Review Southeast Region, May 2007.

·         “Coastal sediment transport using multiphase and granular flow approach”, Thermal-Fluid Seminar Series, University of Florida, Feb. 2007.

·         “A fluid mud transport model in multi-dimensions”, Office of Naval Research workshop on wave-mud interaction, Johns Hopkins University, Jan. 2007.

·         “Modeling Sediment Transport in Heterogeneous Coastal Environment”, 50th Florida Shore & Beach Preservation Association Annual Meeting, September 2006.

·         “Modeling sediment transport in heterogeneous coastal environment”, presented at Prof. Philip L.-F. Liu Symposium, Cornell University, Ithaca, NY. September 2006.

·         “Coastal Sediment Transport in Different Scales”, U.S. Army Crop of Engineers, ERDC-CHL, Vicksburg, MS, June 2006.

·         “On Multiphase Modeling for Sediment Transport”, Workshop on Discrete Element Method, U.S. Army Crop of Engineers, ERDC-GSL, May 2006.

·         “Critical Processes in the wave-current bottom boundary layer”, NOPP – Community Sediment Transport Model Meeting, Woods Hole, MA, May 2006.

·         “Understanding Coastal Sediment Transport Using Small-scale Fluid Mechanics”, University of Miami, RSMAS, Office of Naval Research Progress Review Southeast Region, March 2006.

·         “Toward Modeling Sediment Transport in Heterogeneous Environment”, Texas A&M University, Civil Engineering, College Station, TX, Oct. 2005.

·         “Toward Modeling Sediment Transport in Heterogeneous Environment”, Universidad de Cantabria, Ocean and Coastal Research, Santander, Spain, April 2005.

·         “Toward Modeling Sediment Transport in Heterogeneous Environment”, University of California, Berkeley, Civil and Environmental Engineering, Feb. 2004.

·         “Toward Modeling Sediment Transport in Heterogeneous Environment”, University of Florida, Civil and Coastal Engineering, Nov. 2004.

·         “Sediment transport on beaches”, Summer Lecture Series for Undergraduate Student Research Fellows, Woods Hole Oceanographic Institution, 2004.

·         “Nearshore sub-tidal processes”, Coastal Ocean Forum - A Shortcourse and Workshop on Coastal Change, Woods Hole Oceanographic Institution, April 2004.

·         “Toward nearshore sediment transport modeling using two-phase flow approach”, Naval Research Laboratory, Stennis Space Center, MS, Aug. 2003.

·         “Sediment transport and beach morphology – an integrated modeling framework”, Woods Hole Oceanographic Institution, Applied Ocean Physics & Engineering Seminar, March 2003.

·         “Toward nearshore sediment transport – a theory, the models, and what next?”, Johns Hopkins University, Department of Civil Engineering, March 2003.

·         “Toward nearshore sediment transport – a theory, the models, and what next?, University of Delaware, Civil & Environmental Engineering, Feb. 2003.

·         “Toward nearshore sediment transport – a theory, the models, and what next?”, Cornell University, Environmental Fluid Mechanics Seminar, Civil & Environmental Eng., Feb. 2003.

·         “A two-phase flow model for sheet flow”, National Taiwan University, Engineering Science & Ocean Engineering, Jan. 2003.

·         “A two-phase flow model for sediment transport: sheet flow”, NOPP- Nearshore Community Model project meeting, University of Delaware, Aug. 2002.

·         “A two-phase flow model for sediment transport: sheet flow”, Oregon State University, College of Oceanic & Atmospheric Science, Jun. 2002.