Hojun You

Assistant Professor

Department of Aerospace System Engineering, Sejong University, Seoul 05006, Korea

E-mail  hojun.you@sejong.ac.kr

Office  82-2-6935-2631  

2016 - 2022

Ph. D., Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul, Korea

• • • • Thesis: High-performance higher-order numerical algorithms for multi-physical flow simulations (Advisor: Prof. Chongam Kim)

(Outstanding Doctoral Dissertation Award)

• • • • GPA 4.17/4.3

      • Kwanjeong Scholarship Award (2016 - 2018)

2010 - 2016

B. Sc., Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul, Korea

• • • • Graduated first (GPA 4.21/4.3) in the College of Engineering

      • Presidential Science Scholarship Award (2010 - 2016)

2007 - 2010

Korea Science Academy of KAIST, Busan, Korea

1. J. Kim, H. You, and C. Kim,

Estimation of Optimal Grid Resolution for High-order Implicit Large-eddy Simulation.

Manuscript in preparation.

2. J. Kim, H. You, and C. Kim,

Shock-capturing PID Controller for High-order Schemes on Multi-dimensional Compressible Flows.

Manuscript in preparation.

3. H. You, J. Kim, K. Yune, and C. Kim,

IDEA: Artificial Neural Network Models for 11-species Air Properties at Thermochemical Equilibrium.

Submitted (Under Review).

4. H. You, J. Kim, and C. Kim,

Implicit Quadrature-free Direct Reconstruction Method for Efficient Scale-resolving Simulations.

Submitted (Under Review).

5. H. You, J. Kim, and C. Kim,

Deneb: An open-source High-performance Multi-physical Flow Solver Based on High-order DRM-DG Method.

Computer Physics Communications, Volume 286, 2023, 108672.

DOI: https://doi.org/10.1016/j.cpc.2023.108672

6. H. You and C. Kim,

Direct Reconstruction Method for Discontinuous Galerkin Methods on Higher-order Mixed-curved Meshes III. Code Optimization via Tensor Contraction.

Computers & Fluids, Volume 215, 2021, 104790.

DOI: https://doi.org/10.1016/j.compfluid.2020.104790

7. H. You and C. Kim,

Architecture-based and Target-oriented Algorithm Optimization of High-order Methods via Complete-search Tensor Contraction.

Computer Physics Communications, Volume 264, 2021, 107988.

DOI: https://doi.org/10.1016/j.cpc.2021.107988

8. J. Choi, H. You, C. Kim, H. Y. Yeom, and Y. Kim,

Comparing Unified, Pinned and Host/device Memory Allocations for Memory-intensive Workloads on Tegra SoC.

Concurrency and Computation: Practice and Experience, 2020, e6018.

DOI: https://doi.org/10.1002/cpe.6018 

9. H. You and C. Kim,

Direct Reconstruction Method for Discontinuous Galerkin Methods on Higher-order Mixed-curved Meshes II. Surface Integration.

Journal of Computational Physics, Volume 416, 2020, 109514.

DOI: https://doi.org/10.1016/j.jcp.2020.109514

10. H. You and C. Kim,

Direct Reconstruction Method for Discontinuous Galerkin Methods on Higher-order Mixed-curved Meshes I. Volume Integration.

Journal of Computational Physics, Volume 395, 2019, 223-246.

DOI: https://doi.org/10.1016/j.jcp.2019.06.015

11. H. You and C. Kim,

High-order Multi-dimensional Limiting Strategy with Subcell Resolution I. Two-dimensional Mixed Meshes.

Journal of Computational Physics, Volume 375, 2018, 1005-1032.

DOI: https://doi.org/10.1016/j.jcp.2018.09.011

12. J.S. Park, H. You, and C. Kim,

Higher-order Multi-dimensional Limiting Process for DG and FR/CPR Methods on Tetrahedral Meshes.

Computers & Fluids, Volume 154, 2017, 322-334.

DOI: https://doi.org/10.1016/j.compfluid.2017.03.006

1. Outstanding Doctoral Dissertation Award, Department of Aerospace Engineering, Seoul National University, 25 Feb. 2022.

2. Best Paper Award, Korean Society for Aeronautical & Space Sciences, 21 Nov. 2019.

3. Young Researcher Paper Award, Korean Society for Industrial and Applied Mathematics, 17 May 2019.

4. Award of Excellence, KSIAM-MathWorks Problem Challenge, 2 Nov. 2018.

5. Best Poster Award, Korean Society of Computational Mechanics & German Association for Computational Mechanics International Workshop, 25 Oct. 2018.

6. Best Paper Award, Korean Society for Aeronautical & Space Sciences, 20 Apr. 2017.

1. D. Kim, J. Joo, H. You, K, Oh, C. Kim, H. Cho, T. Kim, M. Kang, and M. Choi,

Data-driven Limiting Strategy for Finite Volume Methods on Multi-dimensional Unstructured Meshes.

13th Asian Computational Fluid Dynamics Conference, 16-19 Oct. 2022, Jeju, Korea.

2. J. Kim, H. You, and C. Kim,

Investigation on Grid Resolution Requirements for High-order Implicit Large Eddy Simulation.

WCCM-XV & APCOM-VII, 31 July-5 Aug. 2022, Yokohama, Japan.

3. H. You, J. Kim, and C. Kim,

Deneb: An Open-source High-performance Flow Solver based on DRM-DG Method.

ICCFD11-0502, ICCFD11, 11-15 July 2022, Maui, Hawaii, USA.

4. J. Kim, H. You, K. Yune, and C. Kim,

ANN-based Air Property Models up to 25,000 K for Hypersonic Equilibrium Flow Simulations.

AIAA 2022-3924, Aviation 2022 Forum, 27 June-1 July 2022, Virtual Event.

DOI: https://doi.org/10.2514/6.2022-3924

5. H. You, J. Kim, and C. Kim,

High-performance Discontinuous Galerkin Flow Solver using Direct Reconstruction Method.

AIAA 2021-2715, Aviation 2021 Forum, 2-6 Aug. 2021, Virtual Event.

DOI: https://doi.org/10.2514/6.2021-2715

6.  H. You, J. Kim, and C. Kim,

Extension of Direct Reconstruction Method to High-order Implicit Schemes for Discontinuous Galerkin Methods.

AIAA Scitech 2021 Forum, 11-21 Jan. 2021, Virtual Event.

7.  J. Kim, H. You, and C. Kim,

Optimal Grid Resolution for High-order Implicit Large Eddy Simulation Using Discontinuous Galerkin Methods.

AIAA 2020-2975, Aviation 2020 Forum, 15-19 June 2020, Virtual Event.

DOI: https://doi.org/10.2514/6.2020-2975

8. H. You and C. Kim,

Direct Reconstruction Method for Physical Domain-based Discontinuous Galerkin Formulation.

AIAA 2020-0776, Special session in honor of Antony Jameson's 85th birthday, AIAA Scitech 2020 Forum, 6-10 Jan. 2020, Orlando, Florida, USA.

DOI: https://doi.org/10.2514/6.2020-0776

9. H. You and C. Kim,

Complete-search Tensor Contractions for Optimizing High-order Methods.

AIAA 2020-0809, AIAA Scitech 2020 Forum, 6-10 Jan. 2020, Orlando, Florida, USA.

DOI: https://doi.org/10.2514/6.2020-0809

10. H. You and C. Kim,

Efficient Computation of Weak Formulation Based High-order Accurate Numerical Methods on Mixed-Curved Meshes.

International Congress on Industrial and Applied Mathematics (ICIAM 2019), 15-19 July 2019, Valencia, Spain.

11. H. You and C. Kim,

Direct Reconstruction Method for Surface Integration of Discontinuous Galerkin Methods on High-order Mixed-curved Meshes.

AIAA 2019-3065, 24th AIAA Computational Fluid Dynamics Conference, 17-21 June 2019, Dallas, Texas, USA.

DOI: https://doi.org/10.2514/6.2019-3065

12. H. You and C. Kim,

Direct Reconstruction Method for Volume Integration of Discontinuous Galerkin Methods on High-order Mixed-curved Meshes.

AIAA 2019-1402, AIAA Scitech 2019 Forum, 7-11 Jan. 2019, San Diego, California, USA.

DOI: https://doi.org/10.2514/6.2019-1402

13. H. You and C. Kim,

On Numerical Integrations of Discontinuous Galerkin Methods over High-order Curved Elements.

6th European Conference on Computational Mechanics & 7th European Conference on Computational Fluid Dynamics, 11-15 June 2018, Glasgow, UK.

14. H. You and C. Kim,

Higher-order Multi-dimensional Limiting Strategy for Subcell Resolution in Unstructured Triangular Meshes.

14th U.S. National Congress on Computational Mechanics, 17-20 July 2017, Montreal, Canada.

15. H. You and C. Kim,

Higher-order Multi-dimensional Limiting Strategy for Subcell Resolution.

AIAA 2017-4110, 23rd AIAA Computational Fluid Dynamics Conference, 5-9 June 2017, Denver, Colorado, USA. 

DOI: https://doi.org/10.2514/6.2017-4110 

1. H. You and C. Kim

Accurate and Efficient Residual Computations of Discontinuous Galerkin Methods on High-order Mixed-curved Meshes.

1st Korean Society of Computational Mechanics & German Association for Computational Mechanics Joint Workshop, 24-25 Oct. 2018, Seoul, Korea.

2. H. You and C. Kim,

Higher-order Multi-dimensional Limiting Strategy with Subcell Monotonicity on Two-dimensional Mixed Meshes.

1st Korean Society of Computational Mechanics & German Association for Computational Mechanics Joint Workshop, 24-25 Oct. 2018, Seoul, Korea.

3. H. You, S. Cho, and C. Kim,

CS2 - Inviscid Strong Vortex-Shock Wave Interaction.

5th International Workshop on High-order CFD Methods at AIAA Scitech 2018 Forum, 6-7 Jan. 2018, Orlando, Florida, USA.

4. H. You and C. Kim,

A Hierarchical Higher-order Multi-dimension Limiting Strategy with a Boundary-Detector for Subcell Resolution.

2016 Hokkaido University & Seoul National University Joint Symposium, 19-20 Dec. 2016, Sapporo, Japan.

1. J. Joo, D. Kim, K. Oh, H. You, C. Kim, H. Cho, T. Kim, M. Kang, and M. Choi,

Multi-dimensional Limiting Process Based on Fully-connected Neural Network: Extension to Unstructured Meshes.

(연결 신경망 기반 다차원 공간 제한 기법 개발: 비정렬 격자로의 확장).

2022 한국 군사과학기술학회 종합학술대회, 9-10 June 2022, Jeju, Korea.

2. H. You, J. Kim, K. Yune, and C. Kim,

IDEA: An Open-source Library of Artificial Neural Network Models to Predict Properties of Thermochemical Equilibrium Air.

(IDEA: 열화학적 평형상태 공기의 물성치 예측을 위한 인공신경망 모델 오픈소스 라이브러리).

Korean Society for Aeronautical & Space Sciences 2022 Spring Conference, 20-22 Apr. 2022, Goseong, Korea.

3. J. Kim, H. You, and C. Kim,

A PID Control-based Shock Capturing Model for High-order Methods.

(고차정확도 수치기법을 위한 PID 제어 기반 충격파 포착 기법).

Korean Society for Aeronautical & Space Sciences 2022 Spring Conference, 20-22 Apr. 2022, Goseong, Korea.

4. J. Kim, H. You, K. Yune, and C. Kim,

Hypersonic Equilibrium Air Property Models Based on Artificial Neural Network. 

Korean Society for Industrial and Applied Mathematics 2021 Annual Meeting, 2-5 Dec. 2021, Busan, Korea.

5. D. Kim, J. Joo, M. Kim, H. You, K. Oh, C. Kim, H. Cho, H. Cho, M. Kang, and M. Choi,

Multi-dimensional Limiting Process Based on Fully-connected Neural Network.

(완전 연결 신경망 기반 다차원 공간 제한 기법 개발).

Korean Society for Aeronautical & Space Sciences 2021 Fall Conference, 17-19 Nov. 2021, Jeju, Korea.

6. H. You, J. Kim, K. Yune, and C. Kim,

ANN-based Models of Thermochemical Equilibrium Air for Hypersonic Flow Simulation II. Training ANN-based Models. 

(극초음속 유동 해석을 위한 인공신경망 기반 열화학적 평형유동 모델 개발 II. 인공신경망 모델 학습).

Korean Society for Aeronautical & Space Sciences 2021 Fall Conference, 17-19 Nov. 2021, Jeju, Korea.

7. J. Kim, H. You, K. Yune, and C. Kim,

ANN-based Models of Thermochemical Equilibrium Air for Hypersonic Flow Simulation I. Equilibrium Air Property. 

(극초음속 유동 해석을 위한 인공신경망 기반 열화학적 평형유동 모델 개발 I. 평형유동 물성치).

Korean Society for Aeronautical & Space Sciences 2021 Fall Conference, 17-19 Nov. 2021, Jeju, Korea.

8. H. You, J. Kim, and C. Kim,

High-fidelity Turbulent Flow Simulation Using Implicit Time-marching Discontinuous Galerkin Method. 

(내재적 시간 전진 불연속 갤러킨 방법을 이용한 고해상도 난류 해석).

Korean Society for Aeronautical & Space Sciences 2021 Spring Conference, 7-9 July 2021, Samcheok, Korea.

9. J. Kim, H. You, and C. Kim,

On the Relation between Solution Approximation Order to Grid Resolution for High-order Implicit Large-eddy Simulation. 

(고차정확도 내재적 대와류모사를 위한 수치정확도에 따른 격자 조밀도 관계식 연구).

Korean Society for Industrial and Applied Mathematics 2021 Spring Conference, 25-27 June 2021, Gangneung, Korea.

10. H. You, J. Kim, and C. Kim,

High-performance Large Eddy Simulation using High-order Discontinuous Galerkin Method.

Korean Society for Industrial and Applied Mathematics 2020 Annual Meeting, 12-15 Nov. 2020, Jeju, Korea.

11. H. You, J. Kim, and C. Kim,

Implicit Large Eddy Simulation of Transitional Flow over SD7003 Airfoil using Discontinuous Galerkin Method. 

(불연속 갤러킨 방법을 이용한 SD7003 익형의 천이 유동 LES 해석).

2020 Korean Society for Computational Fluids Engineering 25th Conference, 18-21 Oct. 2020, Jeju, Korea.

12. J. Kim, H. You, and C. Kim,

On the Optimal Grid Resolution for Large Eddy Simulation using High-order Computational Methods. 

(고차 정확도 수치기법을 이용한 LES의 벽면 격자 해상도에 대한 연구).

2020 Korean Society for Computational Fluids Engineering 25th Conference, 18-21 Oct. 2020, Jeju, Korea.

13. H. You and C. Kim,

High Performance Implicit Large Eddy Simulation Using Discontinuous Galerkin Method with Direct Reconstruction Method. 

(직접 재구성 방법과 불연속 갤러킨 방법을 이용한 고성능 ILES 해석).

Korean Society for Aeronautical & Space Sciences 2020 Spring Conference, 8-11 July 2020, Goseong, Korea.

14. H. You and C. Kim,

On Algorithm Optimization of Discontinuous Galerkin Method via Efficient Tensor Contractions. 

(텐서 연산 개선을 통한 불연속 갤러킨 방법의 알고리즘 최적화 연구).

Korean Society for Aeronautical & Space Sciences 2019 Fall Conference, 20-23 Nov. 2019, Jeju, Korea.

15. J. Kim, H. You, and C. Kim,

High-order Implicit Time Integration with Discontinuous Galerkin Method for Compressible Navier-Stokes Equations on Curved-Mixed Mesh.

(고차 내재적 시간 전진 기법과 불연속 갤러킨을 이용한 곡면-혼합 격자 상 압축성 Navier-Stokes 방정식의 해석).

Korean Society for Aeronautical & Space Sciences 2019 Fall Conference, 20-23 Nov. 2019, Jeju, Korea.

16. H. You and C. Kim,

On the Minimization of Lebesgue Constant for Bivariate Tensor Product Polynomial Space on Square.

Korean Society for Industrial and Applied Mathematics 2019 Annual Meeting, 8-10 Nov. 2019, Yeosu, Korea.

17. S. Kim, H. You, and C. Kim,

Study on Application of GPU Computing for Efficient Computation of High-order Method 

(고차 정확도 수치기법의 효율적인 계산을 위한 GPU 적용 연구).

Korean Society for Computational Fluids Engineering 2019 Fall Conference, 31 Oct.-1 Nov. 2019, Gunsan, Korea.

18. H. You and C. Kim, (Award presentation)

Subcell Monotonic Limiting Strategy for Higher-order Methods on Two-dimensional Mixed Meshes.

Korean Society for Industrial and Applied Mathematics 2019 Spring Conference, 17-18 May 2019, Seoul, Korea.

19. H. You and C. Kim,

Efficient and Accurate Computation of Galerkin Methods on Mixed-curved Meshes via Direct Reconstruction Method 

(직접 재구성 방법(DRM)을 통한 곡면-혼합 격자 상 갤러킨 방법의 효율적이고 정확한 계산).

Korean Society for Industrial and Applied Mathematics 2019 Spring Conference, 17-18 May 2019, Seoul, Korea.

20. J. Kim, H. You, and C. Kim,

On the Grid Resolution for Implicit Large Eddy Simulation Using Discontinuous Galerkin Method 

(불연속 갤러킨 방법을 이용한 ILES의 벽면 격자 해상도 조건에 대한 연구).

Korean Society for Computational Fluids Engineering 2019 Spring Conference, 8-10 May 2019, Jeju, Korea.

21. H. You and C. Kim,

Direct Reconstruction Method for Accurate and Efficient Computation of Discontinuous Galerkin Method II. Extension to Surface Integration 

(불연속 갤러킨 방법의 정확하고 효율적인 계산을 위한 직접 재구성 기법(DRM) II. 면적분 항에 대한 확장).

Korean Society for Aeronautical & Space Sciences 2019 Spring Conference, 17-20 Apr. 2019, Buan, Korea.

22. H. You and C. Kim,

Direct Reconstruction Method for Accurate and Efficient Computation of Discontinuous Galerkin Method I. Development of Robust Adaptive Orthogonalization Process on Restricted Space

(불연속 갤러킨 방법의 정확하고 효율적인 계산을 위한 직접 재구성 기법(DRM) I. 제한된 공간에서 강건한 적응적 직교화 과정 개발).

Korean Society for Aeronautical & Space Sciences 2019 Spring Conference, 17-20 Apr. 2019, Buan, Korea.

23. H. You and C. Kim,

Accurate and Efficient Computation of Compressible Navier-Stokes Equations via Quadrature-free Discontinuous Galerkin Method 

(구적법이 없는 불연속 갤러킨 방법을 통한 압축성 Navier-Stokes 방정식의 정확하고 효율적인 전산 해석 연구).

Korean Society for Aeronautical & Space Sciences 2018 Fall Conference, 28-30 Nov. 2018, Jeju, Korea.

24. J. Kim, H. You, and C. Kim,

On Implicit Temporal Schemes for Discontinuous Galerkin Methods on Curved-mixed Mesh 

(곡면-혼합 격자 상 불연속 갤러킨 방법을 위한 내재적 시간 전진 기법 분석).

Korean Society for Aeronautical & Space Sciences 2018 Fall Conference, 28-30 Nov. 2018, Jeju, Korea.

25. H. You and C. Kim,

고차정확도 불연속 갤러킨 방법을 위한 효율적인 수치 적분 연구.

10th National Congress on Fluids Engineering, 22-24 Aug. 2018, Yeosu, Korea.

26. H. You and C. Kim,

Efficient Computation of Numerical Integration in Discontinuous Galerkin Method on High-order Curved Elements 

(고차정확도 곡면격자상 불연속 갤러킨 방법의 효율적인 수치적분 연구).

Korean Society for Aeronautical & Space Sciences 2018 Spring Conference, pp. 456-457,  18-21 Apr. 2018, Goseong, Korea.

27. S. Cho, H. You, K. Oh, J. Kim, and C. Kim,

Performance Analysis for High-order Numerical Methods through Shock Wave-Strong Vortex Interaction 

(충격파-강한 와류 상호작용 문제의 수치해석을 통한 고차 정확도 수치기법 간의 성능 비교 분석).

Korean Society for Aeronautical & Space Sciences 2017 Fall Conference, pp. 3-4, 15-18 Nov. 2017, Jeju, Korea.

28. H. You and C. Kim,

A Higher-order Hierarchical Multi-dimensional Limiting Process for Subcell Resolution in Two-dimensional Unstructured Triangular Mesh 

(2차원 비정렬 삼각형 격자에서 Subcell Resolution이 가능한 고차 정확도 다차원 공간 제한 기법(hMLP) 연구).

Korean Society for Computational Mechanics Conference, 10-11 Feb. 2017, Seoul, Korea.

29. H. You and C. Kim,

Hierarchical Multi-dimensional Limiting Strategy for Subcell Resolution 

(Subcell Resolution이 가능한 고차 정확도 다차원 공간제한 기법(hMLP) 연구).

Korean Society for Aeronautical & Space Sciences 2016 Fall Conference, pp. 24-25, 16-18 Nov. 2016, Jeju, Korea.