Hyung Taek Ahn\'s home page

Advanced Computational Engineering (ACE) Lab

Hyung Taek Ahn

Assistant Professor
School of Naval Architecture and Ocean Engineering
University of Ulsan

Address :

School of Naval Architecture and Ocean Engineering, University of Ulsan

102 Daehakro, Namgu, Mugeodong, Ulsan, South Korea 680-749

Email : htahn at ulsan.ac.kr
Office : Building 41, Room# 320
Tel : +82-52-259-2164 (Office), Fax : +82-52-259-2836

(in front of the Ranger at TACC, UT-Austin)

Spring 2010: Position available (PhD/MS Scholarships)
2010년 봄학기 석/박사 과정 연구원 모집 (대상전공예: 조선해양 기계/항공 컴퓨터/전기전자 수학/물리)

Career and Education

2008 - present Assistant Professor, University of Ulsan
2006 - 2008 Postdoctoral Research Associate, Los Alamos National Laboratory
2005 - 2006 Research Scientist and Adjunct Professor, University of Texas at Austin
2005 Ph.D. in Aerospace Engineering, University of Texas at Austin
1999 M.S. in Mechanical Engineering, Korea Advanced Institute of Science and Technology
1996 B. Eng. in Mechanical Engineering, Yeungnam University

Research Interest

Fluid/Structure Interaction
Multi-phase / Free Surface Flow
Unstructured Mesh Application for CFD
Adaptive Mesh Refinement (AMR) for CFD and Interfacial Flows
Parallel Computing
Experimental Fluid Mechanics using Circulating Water Channel
Nano/Micro Fluid Flow
Biofluid Flow

Vortex-Induced Vibration of a circular cylinder [Ahn, J. of Comp. Phy. 2006]

Flow around wall mounted NACA0012 wing

Circulating Water Channel at the ACE Lab

Publications

H. T. Ahn and M. Shashkov, Adaptive Moment-of-Fluid Method, Accepted for publication, Journal of Computational Physics
H. T. Ahn, L. Branets, and G. F. Carey, Dynamics Mesh Smoothing for Moving Boundary Problems, Accepted for publication, International Journal for Numerical Methods in Fluids
H. T. Ahn, M. Shashkov, and M. A. Christon, The Moment-of-Fluid Method in Action , Published online and available in Early View, Communications in Numerical Methods in Engineering, 10 July 2008.
H. T. Ahn and M. Shashkov, Multi-material interface reconstruction on generalized polyhedral meshes, Journal of Computational Physics, Volume 226, Issue 2, 1 October 2007, Pages 2096-2132
H. T. Ahn and M. Shashkov, Geometric algorithms for 3D interface reconstruction , Proceedings of the 16th International Meshing Roundtable, Springer Berlin Heidelberg, 2007, Pages 405-422.
H. T. Ahn and G. F. Carey, An enhanced polygonal finite-volume method for unstructured hybrid meshes , International Journal for Numerical Methods in Fluids, Volume 54, Pages 29-46, 10 May 2007
H. T. Ahn and Y. Kallinderis, Strongly coupled flow/structure interactions with a geometrically conservative ALE scheme on general hybrid meshes, Journal of Computational Physics, Volume 219, Pages 671-696, 2006
Y. Kallinderis and H. T. Ahn, Incompressible Navier-Stokes method with general hybrid meshes , Journal of Computational Physics, Volume 210, Pages 75-108, 2005, Ranked 5th in the Top 25 Hottest Articles, Journal of Computational Physics, Jul.-Sep. 2005
H. T. Ahn, A new incompressible Navier-Stokes method with general hybrid meshes and its application to flow/structure interactions, Ph.D. Thesis, The University of Texas at Austin, TX, 2005 (231 pages, 9.5 MB)
H. T. Ahn and Y. Kallinderis, CFD Investigation of the Effect of Current Turbulence on the Hydrodynamic Forces on a Cylinder, 24th International Conference on Offshore Mechanics and Arctic Engineering (OMAE 2005),June 2005, Halkidiki, Greece
Y. Kallinderis and H. T. Ahn, Strongly Coupled Fluid-Structure Interactions via a New Navier-Stokes Method for Prediction of Vortex-Induced Vibrations, 24th International Conference on Offshore Mechanics and Arctic Engineering (OMAE 2005),June 2005, Halkidiki, Greece

Activity

Reviewer for the Journal of Computational Physics, International Journal for Numerical Methods in Fluids , Computers & Fluids , Communications in Numerical Methods in Engineering , International Meshing Roundtable (IMR) Conference , Offshore Mechanics and Arctic Engineering (OMAE) conference.
Keynote speaker for the Third Asian-Pacific Congress on Computational Mechanics (APCOM'07), Dec. 3-6, 2007, Kyoto, Japan
Organizer for the Minisymposium on Modeling and simulation of multi-phase and multi-material flows, The 9th U.S. National Congress on Computational Mechanics (USNCCM9), San Francisco, CA, July 23-26, 2007
Member of American Physics Society (APS), American Society of Mechanical Engineers (ASME), Society of Industrial and Applied Mathematics (SIAM), American Institute of Aeronautics and Astronautics (AIAA), United States Association for Computational Mechanics (USACM), Society of Naval Architects of Korea (SNAK), Korean Society of Computational Fluids Engineering (KSCFE).

Current Students and Staff/Associates

PhD program
- Min Kyu KIM
- Yosef GHAFFARI
MS Program
- Myung Ryoon HAHN (HHI sponsored student)
- Phi TRAN HUU
- Raheel RASOOL
- Hee Yoon PARK (E-Vehicle Technology Institute)
Undergraduate Associates
- SeHoon KIM
- Faisal Muhammad (BS Candidate, ACE Lab - summer research camp)
- 장세훈
- 이은택
Undergraduate Seminar Group
- 안주열 (Group Leader)
- 조홍석
- 박진수
- 이상정
- 손상준
- 오진안 (on leave, 잘지내는지 연락바람)
- 정경수 (on leave, 잘지내는지 연락바람)
Alumni
- Lian-Seng Tan (BS Graduate, ACE Lab - summer research camp, Currently at Samsung Heavy Industry)
Staff Associates
- Dong-Joo Kim (Engineer, Technical Staff)

Teaching (all offered in English)

Fall 2009

Computational Fluid Dynamics (Graduate Class)
C++ Programming and Practice (2 units)

Spring 2009

Ship Resistance and Propulsion
Introduction to Computational Fluid Dynamics

Fall 2008

C++ Programming and Practice (2 units)
Computational Fluid Dynamics (Graduate Class)

Spring 2008

Introduction to Computational Fluid Dynamics (Team teaching with Prof. Yoon)
Engineering Mathematics I