Publications

2024

Z. Zhao, Z. Li, K. Hassibi, K. Azizzadenesheli, J. Yan, H. J. Bae & A. Anandkumar, "Physics-informed neural-operator predictive control for drag reduction in turbulent flows," submitted, 2024.

Z. Flynn, H. J. Bae & A. J. Goza, "Towards an immersed-boundary resolvent analysis framework for wall-bounded flows with various surface configurations," AIAA Aviation, 2024.

C.-T. Lin, A. J. Goza & H. J. Bae, "Active control for turbulent drag reduction by periodic blowing and suction," AIAA Aviation, 2024.

S. C. Leung, D. Zhou & H. J. Bae, "Integrated gradients for optimal surface pressure sensor placement for lift prediction of an airfoil subject to gust," AIAA Aviation, 2024.

B. Lopez-Doriga, E. Ballouz, H. J. Bae & S. T. M. Dawson, "Sparse space-time resolvent analysis for statistically-stationary and time-varying flows," under review, 2024.

E. Ballouz, B. Lopez-Doriga, S. T. M. Dawson & H. J. Bae, "Wavelet-based resolvent analysis of non-stationary flows," under review, 2024.

B. Jia, W. Li & H. J. Bae, "Transonic buffet in flow past a low Reynolds number airfoil," Journal of Aerospace Engineering, accepted, 2024.

D. Zhou & H. J. Bae, "Wall modeling of turbulent flows with varying pressure gradients using multi-agent reinforcement learning," AIAA Journal, accepted, 2024

A. Elnahhas, E. Lenz, P. Moin, A. Lozano-Durán, & H. J. Bae, "Are the dynamics of wall turbulence in minimal channels and larger domain channels equivalent? A graph-theoretic approach," Journal of Physics: Conference Series 2753, 012004, 2024.

E. Ballouz, S. T. M. Dawson & H. J. Bae, "Transient growth of wavelet-based resolvent modes in the buffer layer of wall-bounded turbulence," Journal of Physics: Conference Series 2753, 012002, 2024.

B. Lopez-Doriga, M. Atzori, R. Vinuesa, H. J. Bae, A. Srivastava & S. T. M. Dawson, "Linear and nonlinear Granger causality analysis of turbulent duct flows," Journal of Physics: Conference Series 2753, 012017, 2024.

D. Zhou & H. J. Bae, "Sensitivity analysis of wall-modeled large-eddy simulation for separated turbulent flow," Journal of Computational Physics 506, 112948, 2024.

2023

H. J. Bae & A. Lozano-Durán, "Numerical and modeling error assessment of large-eddy simulation using direct-numerical-simulation-aided large-eddy simulation," submitted, 2023.

R. Arun, H. J. Bae & B. J. McKeon, "Towards real-time reconstruction of velocity fluctuations in turbulent channel flow," Physical Review Fluids 8, 064621, 2023.

D. Zhou, M. P. Whitmore, K. P. Griffin & H. J. Bae, "Large-eddy simulation of flow over Boeing Gaussian bump using multi-agent reinforcement learning wall model," AIAA Aviation, 2023.

A. Lozano-Durán & H. J. Bae, "Machine learning building-block-flow wall model for large-eddy simulation," Journal of Fluid Mechanics 963, A35, 2023.

A. Vadrot, X. I. A. Yang, H. J. Bae, M. Abkar, "Log-law recovery through reinforcement-learning wall model for large-eddy simulations," Physics of Fluids 35, 055122, 2023.

B. Lopez-Doriga, E. Ballouz, H. J. Bae & S. T. M. Dawson, "A sparsity-promoting resolvent analysis for the identification of spatiotemporally-localized amplification mechanisms," AIAA SciTech, 2023.

E. Ballouz, B. Lopez-Doriga, S. T. M. Dawson & H. J. Bae, "Wavelet-based resolvent analysis for statistically-stationary and temporally-evolving flows," AIAA SciTech, 2023.

2022

D. Zhou, M. P. Whitmore, K. P. Griffin & H. J. Bae, "Multi-agent reinforcement learning for wall models in LES of flow over periodic hills," Center for Turbulence Research Proceedings of the Summer Program, 2022.

B. Farrell, E. Kim, H. J. Bae, M.-A. Nikolaidis & P. Ioannou, "Investigating nonlinearity in wall-turbulence: regeneration versus parametric mechanisms," Center for Turbulence Research Proceedings of the Summer Program, 2022.

W. Rozema, H. J. Bae* & R. Verstappen, "Local dynamic gradient Smagorinsky model for large-eddy simulation," Physical Review Fluids 7, 074604, 2022.

H. J. Bae & P. Koumoutsakos, "Scientific multi-agent reinforcement learning for wall-models of turbulent flows," Nature Communications 13, 1443, 2022 (selected Editors' highlights).

2021

M. A. Ahmed, H. J. Bae, A. F. Thompson & B. J. McKeon, "Resolvent analysis of stratification effects on wall-bounded shear flows," Physical Review Fluids 6, 084804, 2021.

H. J. Bae & M. Lee, "Life-cycle of streaks in the buffer layer of wall-bounded turbulence," Physical Review Fluids 6, 064603, 2021 (selected editor's suggestion).

H. J. Bae & A. Lozano-Durán, "Effect of wall boundary conditions on wall-modeled large-eddy simulation in a finite-difference framework," Fluids 6, 112, 2021 (invited paper).

H. J. Bae, A. Lozano-Durán & B. J. McKeon, "Nonlinear mechanism of the self-sustaining process in the buffer and logarithmic layer of wall-bounded flows," Journal of Fluid Mechanics 914, A3, 2021.

2020

A. Lozano-Durán & H. J. Bae, "Self-critical machine-learning wall-modeled LES for external aerodynamics," Annual Research Briefs, Center for Turbulence Research, Stanford University, 247-256, 2020.

H. J. Bae, S. T. M. Dawson & B. J. McKeon, "Resolvent-based study of compressibility effects on turbulent boundary layers," Journal of Fluid Mechanics 883, A29, 2020 (selected for cover).

H. J. Bae & B. J. McKeon, "Characterization of vortex regeneration mechanism in the self-sustaining process of wall-bounded flows using resolvent analysis," Journal of Physics: Conference Series 1522, 012001, 2020.

A. Lozano-Durán, H. J. Bae & M. P. Encinar, "Causality of energy-containing eddies in wall turbulence," Journal of Fluid Mechanics 882, A2, 2020.

H. J. Bae, S. T. M Dawson & B. J. McKeon, "Studying the effect of wall cooling in supersonic boundary layer flow using resolvent analysis," AIAA SciTech, AIAA 2020-0575, 2020.

2019

H. J. Bae & A. Lozano-Durán "A minimal flow unit of the logarithmic layer in the absence of near-wall eddies and large scales," Annual Research Briefs, Center for Turbulence Research, Stanford University, 247-256, 2019.

A. Lozano-Durán & H. J. Bae, "Error scaling of large-eddy simulation in the outer region of wall-bounded turbulence," Journal of Computational Physics 392, 532-555, 2019.

A. Lozano-Durán & H. J. Bae, "Characteristic scales of Townsend's wall-attached eddies," Journal of Fluid Mechanics  868, 698-725, 2019.

H. J. Bae, A. Lozano-Durán, S. T. Bose & P. Moin, "Dynamic slip wall model for large-eddy simulation," Journal of Fluid Mechanics 856, 400–432, 2019.

2018

H. J. Bae & A. Lozano-Durán, "DNS-aided explicitly filtered LES of channel flow," Annual Research Briefs, Center for Turbulence Research, Stanford University, 197-207, 2018.

A. Lozano-Durán & H. J. Bae, "Characteristic scales of Townsend’s wall-attached eddies," Annual Research Briefs, Center for Turbulence Research, Stanford University, 183-196, 2018.

M. Bassenne, H. J. Bae & A. Lozano-Durán, "Mandala-inspired representation of the turbulent energy cascade," Physical Review Fluids 3, 100505, 2018.

H. J. Bae, "Investigation of dynamic subgrid-scale and wall models for turbulent boundary layers," Ph.D. Thesis, Stanford University, 2018

H. J. Bae, J. D. Gibbon, R. M. Kerr, and A. Lozano-Durán, "Regularity diagnostics applied to a turbulent boundary-layer," Proceedings of the Summer Program, Center for Turbulence Research, Stanford University, 247-255, 2018.

H. J. Bae, M. P. Encinar & A. Lozano-Durán, "Causal analysis of self-sustaining processes in the log-layer of wall-bounded turbulence," Journal of Physics: Conference Series 1001, 012013, 2018.

H. J. Bae, A. Lozano-Durán, S. T. Bose & P. Moin, "Turbulent intensities in large-eddy simulation of wall-bounded flows," Physical Review Fluids 3, 014610, 2018.

2017

H. J. Bae & A. Lozano-Durán, "Towards exact subgrid-scale models for explicitly filtered large-eddy simulation of wall-bounded," Annual Research Briefs, Center for Turbulence Research, Stanford University, 207–214, 2017.

A. Lozano-Durán, H. J. Bae, S. T. Bose & P. Moin, "Dynamic wall models for the slip boundary condition," Annual Research Briefs, Center for Turbulence Research, Stanford University, 229–242, 2017.

A. Lozano-Durán & H. J. Bae, "Convergence of large-eddy simulation in the outer region of wall-bounded turbulence," Annual Research Briefs, Center for Turbulence Research, Stanford University, 257–270, 2017.

2016

H. J. Bae, A. Lozano-Durán, and P. Moin, "Investigation of the slip boundary condition in wall-modeled LES," Annual Research Briefs, Center for Turbulence Research, Stanford University, 75–86, 2016.

A. Lozano-Durán & H. J. Bae, "Turbulent channel with slip boundaries as a benchmark for subgrid-scale models in LES," Annual Research Briefs, Center for Turbulence Research, Stanford University, 97–103, 2016.

M. H. Silvis, F. X. Trias, M. Abkar, H. J. Bae, A. Lozano-Durán & R. Verstappen, "Exploring nonlinear subgrid-scale models and new characteristic length scales for large-eddy simulation," Proceedings of the Summer Program, Center for Turbulence Research, Stanford University, 265–274, 2016.

M. Abkar, H. J. Bae & P. Moin, "Minimum-dissipation scalar transport model for large-eddy simulation of turbulent flows," Physical Review Fluids 1, 041701(R), 2016.

2015

W. Rozema, H. J. Bae, P. Moin & R. Verstappen,  "Minimum-dissipation models for large-eddy simulation," Physics of Fluids 27, 085107, 2015.

2014

H. J. Bae & P. Moin, "Multirate time-stepping least squares shadowing method," Annual Research Briefs, Center for Turbulence Research, Stanford University, 207–214, 2014.

F. Capuano, G. Coppola, G. Balarac, H. J. Bae & L. de Luca, "A low-cost time- advancing strategy for energy-preserving turbulent simulations," Proceedings of the Summer Program, Center for Turbulence Research, Stanford University, 377–386, 2014.

R. Verstappen, W. Rozema & H. J. Bae, "Numerical scale separation in large-eddy simulation," Proceedings of the Summer Program, Center for Turbulence Research, Stanford University, 417–426, 2014.