tom  Tian-Jian Hsu (Tom)

   Assistant 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: July 2009.

 

 

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.

 

My main research interest is to understand various noncohesive and cohesive sediment transport processes and their applications to morphodynamics in fluvial, estuarine and coastal environments. Sediment transport in general is a multi-phase fluid-particle system. We focus on fundamental mechanisms such as boundary layer turbulence, turbulence-sediment interaction, intergranular interaction (rheology), and floc dynamics. Through studying detailed sediment transport processes, we also emphasize their applications to morphodynamics. For example, we study wave, current and breaking-wave induced sand transport at beaches and their application to nearshore sandbar migration and longshore transport. We are also interested in understanding the processes controlling the fate of fine terrestrial sediment into the coastal ocean. Specifically, we study cohesive sediment deposition and resuspension in estuary, tidal flat and continental shelf.

 

 

Professional Experience

Publication

Current and Past Projects

Honors and Awards

 

 

Professional Experience:

Assistant Professor, University of Delaware                                                           Aug 2008 – Present

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

Center for Applied Coastal Research, Civil and Environmental Engineering.

 

 

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.

 

 

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., 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., 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., The effect of variable yield strength on modeling flocculation, Water Res., in press.

 

 

Current Research Projects:

 

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

(Previously “A Fluid Mud Transport Model in Multi-dimensions”)

PI: Tian-Jian Hsu

Sponsor: Office of Naval Research (Coastal Geosciences)

Duration: 07-10

 

2.      CAREER: 3D Multiphase Sediment Transport Modeling Framework

      PIs: Tian-Jian Hsu

      Sponsor: National Science Foundation (OCE-Physical Oceanography)

      Duration: 07-11

 

3.      NOPP - Community Sediment Transport Model

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

      Sponsor: NOPP (subcontract from WHOI)

      Duration: 06-09

 

4.      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

 

 

 

 

Past Research Project:

 

1.  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

 

2.  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

 

3.  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

 

4.  Scouring Around District’s Hydraulic Structures

    PIs: Tian-Jian Hsu 

    Sponsor: South Florida Water Management District; USGS

    Duration: 06-07

 

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

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

 

6.  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:

2009 Fall (UD):          CIEG 667    Physics of Cohesive Sediment

2009 Spring (UD):      CIEG 306    Fluid Mechanics Laboratory

                                    CIEG 678    Transport and Mixing Processes

 

2008 Fall (UD):           CIEG 865    Coastal Seminar

 

2008 Spring (UF):       OCP 6655   Coastal Sediment Transport

 

2007 Fall (UF):           EOC 6934   Mixing and Transport in Turbulent Flow

 

2007 Spring (UF):       OCP 6655   Coastal Sediment Transport

 

2006 Fall (UF):           EOC 6934   Mixing and Transport in Turbulent Flow

 

 

 

Professional Affiliation and Activities:

·     American Society of Civil Engineer (ASCE).

·     American Geophysical Union (AGU).

·         International Association of Hydraulic Research (IAHR).

·     American Physical Society (APS).

 

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

2.  Member of Review Panel, National Science Foundation (NSF) 2009.

3.  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.

4.  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.

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

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

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

 

 

 

Invited Presentations:

1.      “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.

2.      “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).

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

4.      “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.

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

6.      “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).

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

8.      “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.

9.      “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.

10.  “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.

11.  “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.

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

13.  “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.

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

15.  “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.

16.  “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.

17.  “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.

18.  “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.

19.  “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.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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