H
Haecheon Choi
Researcher at Seoul National University
Publications - 155
Citations - 12369
Haecheon Choi is an academic researcher from Seoul National University. The author has contributed to research in topics: Turbulence & Reynolds number. The author has an hindex of 47, co-authored 154 publications receiving 10857 citations. Previous affiliations of Haecheon Choi include Center for Turbulence Research & Ames Research Center.
Papers
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An immersed-boundary finite-volume method for simulations of flow in complex geometries
TL;DR: In this paper, a new immersed-boundary method for simulating flows over or inside complex geometries is developed by introducing a mass source/sink as well as a momentum forcing.
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Control of Flow Over a Bluff Body
TL;DR: In this paper, the authors present control methods for flow over a bluff body such as a circular cylinder, a 2D bluff body with a blunt trailing edge, and a sphere.
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Active turbulence control for drag reduction in wall-bounded flows
TL;DR: In this article, the authors explore concepts for active control of turbulent boundary layers leading to skin-friction reduction using the direct numerical simulation technique and show that significant drag reduction is achieved when the surface boundary condition is modified to suppress the dynamically significant coherent structures present in the wall region.
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Direct numerical simulation of turbulent flow over riblets
TL;DR: In this article, a drag reduction mechanism by riblets with small spacings was proposed to reduce viscous drag by restricting the location of the streamwise vortices above the wetted surface.
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Grid-point requirements for large eddy simulation: Chapman’s estimates revisited
Haecheon Choi,Parviz Moin +1 more
TL;DR: In this paper, the authors modified the resolution requirements for large eddy simulation (LES) using accurate formulae for high Reynolds number boundary layer flow and showed that the number of grid points required for wall-modeled LES is proportional to ReLx, where Lx is the flat-plate length in the streamwise direction.