Hojin Kim
Hojin Kim

PhD Student · Purdue University

Hojin Kim

Scientific machine learning for computational fluid dynamics — building models that are generalizable, interpretable, and grounded in physics.

6Publications
12+Talks & posters
3Journals reviewed
SNU→PSU→PurduePath

About

I am a Ph.D. student in Mechanical Engineering at Purdue University, advised by Prof. Romit Maulik. My work sits at the intersection of computational fluid dynamics and machine learning: I develop scientific machine learning methods that are generalizable, interpretable, and consistent with the underlying physics.

I am particularly interested in differentiable-physics approaches to turbulence closure modeling on unstructured grids, interpretable deep learning for dynamical systems, and generative models for reconstructing high-speed flows. Previously, I earned my B.S. and M.S. in Aerospace Engineering from Seoul National University. In summer 2026, I will join Lawrence Livermore National Laboratory as a Graduate Research Intern.

News

Publications

H. Kim denotes the author of this site.

2026
Multiscale Hypersonic Boundary Layer Reconstruction via Spectral Binning and Subdomain-wise Conditional Diffusion
H. Kim, D. Chakraborty, T. Toki, C. Scalo, R. Maulik
Under review
2025
Towards Interpretable Deep Learning and Analysis of Dynamical Systems via the Discrete Empirical Interpolation Method
H. Kim, R. Maulik
Under review
2026
Generalizable data-driven turbulence closure modeling on unstructured grids with differentiable physics
H. Kim, V. Shankar, V. Viswanathan, R. Maulik
Published Computers & Fluids, 318, 107200
2025
Interpretable A-posteriori error indication for graph neural network surrogate models
S. Barwey, H. Kim, R. Maulik
Published Comput. Methods Appl. Mech. Eng., 433, 117509
2025
Improved Conceptual Design of eVTOL Aircraft: Considering Rotor–Rotor Interactional Effects
H. Kim, J. Lee, D. Lee, K. Yee
Published Int. J. Aeronautical and Space Sciences
2024
Data-driven physics-informed neural networks: A digital twin perspective
S. Yang, H. Kim, Y. Hong, K. Yee, R. Maulik, N. Kang
Published Comput. Methods Appl. Mech. Eng., 428, 117075

Selected Talks & Conferences

Workshops & earlier presentations
  • Towards Interpretable Deep Learning via the Discrete Empirical Interpolation MethodAAAI XAI4Science Workshop · Singapore · Jan 2026
  • Scalable, interpretable, and explainable scientific machine learning with geometric deep learning18th USNCCM · Chicago, IL · Jul 2025
  • Differentiable physics for generalizable closure modeling of separated flowsPurdue CCAM SciML Workshop · West Lafayette, IN · Sep 2025
  • Scalable, adaptive, and explainable scientific machine learning for surrogate models of PDEsAAAI Bridge Program (KGML) · Philadelphia, PA · Feb 2025
  • Scalable, adaptive, and explainable scientific machine learning for surrogate models of PDEsAAAI Symposium on Computational Scientific Discovery · Arlington, VA · Nov 2024
  • Design Methodology of Urban Air Mobility for Noise Mitigation at the Conceptual Design Stage48th European Rotorcraft Forum · Winterthur, Switzerland · Sep 2022

Honors & Awards

Professional Service

Journal reviewer for Journal of Fluid Mechanics, Journal of Computational Physics, and Physics of Fluids.