Education

PhD in Aerospace Engineering, University of Texas at Austin (Thesis Supervisors: Prof. Yannis Kallinderis / Prof. Clint Dawson), 텍사스(오스틴)주립대
MS in Mechanical Engineering, KAIST 한국과학기술원
BEng in in Mechanical Engineering, Yeungnam University 영남대학교

Career

2001~2005: Graduate Research Associate, Offshore Technology Research Center, UT-Austin
2005~2006: Adjunct Professor, Dept. of ASE/EM, University of Texas at Austin
2005~2006: Research Scientist, ICES, University of Texas at Austin (Supervisor: Prof. Graham F. Carey)
2006~2008: Postdoctoral Research Associate, Theoretical Division, Los Alamos National Laboratory (Supervisor: Dr. Mikhail Shashkov)
2008~2012: Assistant Professor, University of Ulsan
2012~2017: Associate Professor, University of Ulsan
2016~2017: Visiting Professor, Dept. of MAE (Prof. Hong Luo’s Group), North Carolina State University
2017~Present: (Full) Professor, University of Ulsan

Research Interest :

CFD & Super-Computing

CFD-code (ULSAN3D) development

A few examples can be found at: https://www.youtube.com/channel/UCZCMRecZOeny8XgUa4R3Yhg

Flow Visualization Competition Award, ASME - JSME - KSME Joint Fluids Engineering Conference 2019

Publications : Recent (2018.1~)

Thi Quynh Nguyen,Hyung Taek Ahn &Christos Kavouklis, High-Order WENO-based Semi-Implicit Projection Method for Incompressible Turbulent Flows: Development, Accuracy, and Reynolds Number Effects , International Journal of Computational Fluid Dynamics , Volume 37, 2023 - Issue 4 Pages 251-278 | Received 30 Jul 2023, Accepted 27 Nov 2023, Published online: 05 Jan 2024
Kim, Deokhun, and Hyung Taek Ahn. "Discontinuous Galerkin Spectral Element Method for Elliptic Problems Based on First-Order Hyperbolic System." Journal of the Korean Society for Industrial and Applied Mathematics, vol. 25, no. 4, 2021, pp. 173–195.
Deokhun Kim and Hyung Taek Ahn, Discontinuous Galerkin spectral element method for incompressible flows s based on a first-order hyperbolic system , In preparation.
Hyung Taek Ahn, Discontinuous Galerkin spectral element method for elliptic problems based on a first-order hyperbolic system , Under Review
GwangSoo Go and Hyung Taek Ahn, Cartesian mesh-based flow simulation around a moving body using an efficient and accurate SDF transformation, Under Review
Gwangsoo Go, Hyung Taek Ahn, Gibeom Gu and Min Ah Kim, “Numerical Simulation of Flow over Stationary and Rotating Golf Ball on Cartesian Grid”, ASME Journal of Fluids Engineering , Volume 142, Issue 3 March 2020.
Hyung Taek Ahn, Hyperbolic Cell-centered Finite Volume Method for Incompressible Navier-Stokes Equations on Unstructured Grids, COMPUTERS & FLUIDS, Volume 200, 30 March 2020, Article number 104434.
Gwangsoo Go and Hyung Taek Ahn, A Geometric Multigrid Accelerated Incompressible Flow Simulation over Complex Geometries, COMPUTERS & FLUIDS, Volume 197, 30 January 2020, Article number 104350.
Gwangsoo Go and Hyung Taek Ahn, "Hydrodynamic derivative determination based on CFD and motion simulation for a tow-fish," Applied Ocean Research, Volume 82, January 2019, Pages 191-209
Euntaek Lee, Hyung Taek Ahn, and Hong Luo, Cell-centered high-order hyperbolic finite volume method for diffusion equation on unstructured grids, JOURNAL OF COMPUTATIONAL PHYSICS, 2018
Euntaek Lee and Hyung Taek Ahn, A reconstruction-based cell-centered high-order finite volume method for incompressible viscous flow simulation on unstructured meshes, COMPUTERS & FLUIDS, 2018

Publications : Old (~2017.12)

Simulation-Based Determination of Hydrodynamic Derivatives and 6DOF Motion Analysis for Underwater Vehicle, J. Ocean Eng. Technol.2017; 31(5): 371-377.
6DOF Simulation and Determination of Hydrodynamic Derivatives of Underwater Tow-Fish Using CFD, 대한조선학회논문집(Journal of the Society of Naval Architects of Korea), vol. 63, pp. 315~328, 2016
CFD PREDICTION OF AERODYNAMIC DRAG ACTING ON ALPINE DOWNHILL SKIER, , Journal of Computational Fluids Engineering, Vol. 21, Pages 71~76, 2016
Nonlinear Analysis of Underwater Towed Cable Using Robust Nodal Position Finite Element Method, 대한조선학회논문집(Journal of the Society of Naval Architects of Korea), vol. 53, pp. 388~399, 2016
3D Nonlinear Fully Coupled Simulation of Cable and Tow-fish System, Journal of Ocean Engineering and Technology (JOET), Vol. 30, pp. 458~467, 2016
Y.G. Motlagh, E.T. Lee, H.T. Ahn, Simulation of laminar flow through eccentric annuli using isogeometric variational multiscale method, JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, Vol. 29, Pages 3249~3256, 2015 (SCIE)
FLUID-BODY INTERACTION ANALYSIS OF FLOATING BODY IN THREE DIMENSIONS, Journal of Computational Fluids Engineering, Vol. 20, Pages 103~108, 2015
AN EFFICIENT ALGORITHM FOR INCOMPRESSIBLE FREE SURFACE FLOW ON CARTESIAN MESHES, Journal of Computational Fluids Engineering, Vol. 19, Pages 20~28, 2014
Fully Unstructured Mesh based Computation of Viscous Flow around Marine Propellers, Journal of the Society of Naval Architects of Korea), Vol. 51, Pages 162~170, 2014
A STUDY ON IMPLICIT METHOD FOR SOLVING INCOMPRESSIBLE FLOW WITH UNSTRUCTURED MESHES, Journal of Computational Fluids Engineering, Vol. 19, Pages 27~33, 2014
PRECONDITIONED NAVIER-STOKES COMPUTATION FOR WEAKLY COMPRESSIBLE FLOW ANALYSIS ON UNSTRUCTURED MESH, Journal of Computational Fluids Engineering, Vol. 18, Pages 79~86, 2013
Y.M.Ghaffari, H.T. Ahn, T.J.R. Hughes, V.M. Calo, Simulation of laminar and turbulent concentric pipe flows with the isogeometric variational multiscale method, Computers & Fluids, Volume 71, Pages 146–155, 2013 (SCI)
Study on dynamic behavior analysis of towed line array sensor, International Journal of Naval Architecture and Ocean Engineering, Vol4, Pages 9~19, 2012 (SCIE)
Y.M.Ghaffari, H.T. Ahn, Laminar and Turbulent Channel Flow Simulation using Residual Based Variational Multi-Scale Method, JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, Vol. 26, Pages 1~11, 2012 (SCIE)
Y.M.Ghaffari, H.T. Ahn, THE ISOGEOMETRIC VARIATIONAL MULTISCALE METHOD FOR LAMINAR INCOMPRESSIBLE FLOW, Journal of the Korean Society for Industrial and Applied Mathematics(KSIAM), Vol. 16, Pages 65~84, 2012
FLUID-STRUCTURE INTERACTION ANALYSIS FOR VORTEX-INDUCED VIBRATION OF CIRCULAR CYLINDER), Journal of Computational Fluids Engineerin), Vol. 17, Pages 29~35, 2012
AN EFFICIENT INCOMPRESSIBLE FREE SURFACE FLOW SIMULATION USING GPU, Journal of Computational Fluids Engineering, Vol. 17, Pages 35~41, 2012
VORTEX-INDUCED VIBRATION SIMULATION OF MULTIPLE CIRCULAR CYLINDERS IN LOW REYNOLDS NUMBER FLOWS USING CARTESIAN MESHES, Journal of Computational Fluids Engineering, Vol. 16, Pages 73~82, 2011
Self Noise Analysis of Towed Array Sonar Induced by Axisymmetric Vibrations Propagating Along Fluid-filled Elastic Hoses, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 21, Pages 437~446, 2011
(Vortex-Induced Vibration of Simple Slender Structure Using Cartesian Mesh), 대한조선학회논문집(Journal of the Society of Naval Architects of Korea), Vol. 48, Pages 260~266, 2011
Air Compressibility Effect in CFD-based Water Impact Analysis, Journal of the Society of Naval Architects of Korea, Vol. 48, Pages 581~591, 2011
H.T.Ahn*, L. Branets,G.F. Carey, Moving boundary simulations with dynamic mesh smoothing, INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS, Vol. 64, Pages 887~907, 2010 (SCI)
Morphological characteristics of the upper airway and pressure drop analysis using 3D CFD in OSA patients, KOREAN JOURNAL OF ORTHODONTICS, Vol. 40, Pages 66~76, 2010 (SCIE)
H. T. Ahn and M. Shashkov, Adaptive Moment-of-Fluid Method, Journal of Computational Physics , Vol 228, Pages 2792~2821, 2009 (SCI)
ADAPTIVE MOMENT-OF-FLUID METHOD : A NEW VOLUME-TRACKING METHOD FOR MULTIPHASE FLOW COMPUTATION, Journal of Computational Fluids Engineering) Vol. 14, Pages 18~23, 2009
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, Vol 25, Pages 1009~2018, 2009. (SCIE)
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 (SCI)
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 (SCI)
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 (SCI)
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 (SCI)

Honors and Awards

Flow Visualization Competition Award, ASME - JSME - KSME Joint Fluids Engineering Conference 2019

Best paper award(우수논문상), Korean Society for Computational Fluids Engineering (한국전산유체공학회), 2015
Song-Am Award (for Young Investigators in Ship Hydrodynamics), 대한조선학회(Society of Naval Architects of Korea), 2009
Ambassadorial Scholarship, 1999~2002, Rotary Foundation, Rotary International

Patents

물체의 표면구조 , Korean Intellectual Property Office, 국내특허, 등록 2016.11
전산유체역학 해석을 이용한 야구공 궤적예측 장치 및 그 방법 , Korean Intellectual Property Office, 국내특허, 등록 2018.12

Services and Activities

대한조선학회(SNAK), Editing Executive Director(편집이사), 2016~2017
한국전산유체공학회(KSCFE), 사업이사, 2014~
한국산업응용수학회(KSIAM), 학술이사, 2015~
Reviews: Journal of computational physics, Computers & Fluids, IJNMF, IJNME, CMAME, JMST, and etc.
Memberships: KSOE, KSME

Graduate Students:

Current (Degree program)

1. DeokHun Kim 김덕훈 (박사과정)
2. Quynh Nguyen Thi (박사과정)
3. 서다솔(석사과정)
4. 윤석표(석사과정)
5. 정성호(석사과정)

Past (Degree, Year; Current affiliation)

1. Tran Huu Phi (MS, 2010.8; Baker Hughes),
2. Myung Ryoon HAN 한명륜 (MS, 2011.2, 현대중공업 Hyundai Heavy Industry),
3. Raheel Rasool(MS, 2011.2, RWTH Aachen),
4. Se Hoon KIM 김세훈 (MS, 2012.2, 삼성중공업 Samsung Heavy Industry),
5. Sang Mi AHN 안상미 (MS, 2012.2, ClassNK),
6. Hwan Eui HONG 홍환의 (MS, 2012.2, 현대중공업 Hyundai Heavy Industry),
7. Yousef Ghaffari Motlagh(PhD, 2013.2, University of Leeds, UK)
8. Sang June SOHN 손상준(MS, 2013.2, Korea Navy <- to be updated!),
9. Min Geon KIM 김민건(MS, 2013.2, 현대중공업 Hyundai Heavy Industry),
10. Young Woo KIM 김영우(MS, 2013.2, 현대미포 Hyundai-Mipo),
11. GwangSoo GO 고광수(MS, 2014.2, PhD program, Univ. of ULSAN),
12. EunTaek LEE 이은택 (MS, 2014.2, PhD program,Univ. of ULSAN),
13. ChangHyun KIM 김창현(MS, 2014.2, 현대중공업 Hyundai Heavy Industry),
14. Min Gyu KIM 김민규(PhD, 2014.8, University of Strathclyde, Glasgow, UK<- to be updated!)
15. SungHyun NAM 남성현(MS, 2015.2, 현대중공업Hyundai Heavy Industry)
16. JinGoo KIM 김진구 (MS, 2016.2, 현대중공업Hyundai Heavy Industry)
17. Woo Maan JEONG 정우만 (MS, 2016.2, 현대중공업Hyundai Heavy Industry)
18. SunEun KWON 권순은 (MS, 2016.2, 현대중공업 Hyundai Heavy Industry )
19. JungYun WON 원정윤 (MS, 2016.2, 현대중공업Hyundai Heavy Industry)
20. DoGun YOON 윤도건 (MS, 2017.2, 현대중공업 Hyundai Heavy Industry )
21. JongSu Kim 김종수 (MS, 2018.2, KOMERI 한국조선해양기자재연구원)
22. GwangSoo GO 고광수 (PhD, 2019.8, 현대중공업 Hyundai Heavy Industry 선박해양연구소 HMRI 2019.6~)
23. Euntaek Lee 이은택 (박사 수료, 2019.12~ 국방과학연구소)
24. HoYoung LEE 이호영 (석사 수료, 2022.3~) (CFD Software 스타트업 )

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