Numerical simulation of flow over a rough bed [PDF]
, 2007 This paper presents results of a direct numerical simulation (DNS) of turbulent flow over the rough bed of an open channel. We consider a hexagonal arrangement of spheres on the channel bed.
Williams, J.J.R. +2 more
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Direct Numerical Simulation and Visualization of Biswirling Jets
Advances in Mechanical Engineering, 2014 Two parallel swirling/rotating jets with a distance between them are termed biswirling jets here, which have important and complicated vortex structures different from the single swirling jet due to the negligible vortex-vortex interactions.
Jie Yan +3 more
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Direct numerical simulation of turbulent heat transfer over hemispherical roughness
Nihon Kikai Gakkai ronbunshu, 2020 Direct numerical simulation of turbulent heat transfer over hemispherical roughness is carried out by the double-distribution function lattice Boltzmann method (LBM).
Rika NAGURA +2 more
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Direct numerical simulation of intermittent turbulence under stably stratified conditions [PDF]
Nonlinear Processes in Geophysics, 2015 In this paper, we simulate intermittent turbulence (also known as bursting events) in stably stratified open-channel flows using direct numerical simulation. Clear signatures of this intriguing phenomenon are observed for a range of stabilities. However,
P. He, S. Basu
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Direct numerical simulation of matrix diffusion across fracture/matrix interface
Water Science and Engineering, 2013 Accurate descriptions of matrix diffusion across the fracture/matrix interface are critical to assessing contaminant migration in fractured media. The classical transfer probability method is only applicable for relatively large diffusion coefficients ...
Yong Zhang +3 more
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Comparison of Subgrid-scale Viscosity Models and Selective Filtering Strategy for Large-eddy Simulations [PDF]
, 2013 Explicitly filtered large-eddy simulations (LES), combining high-accuracy schemes with the use of a selective filtering without adding an explicit subgrid-scales (SGS) model, are carried out for the Taylor-Green-vortex and the supersonic-boundary-layer ...
STEFANIN VOLPIANI, Pedro +3 more
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Direct numerical simulation of turbulent flow above zigzag riblets
AIP Advances, 2018 We investigate the drag-reducing performance of a zigzag riblet inspired by the “Miura fold” and its influence on the streamwise vortices above a wall-bounded turbulent flow through direct numerical simulations of channel flows. The employed channel wall
Kie Okabayashi +3 more
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Direct Numerical Simulation and Visualization of Subcooled Pool Boiling
Science and Technology of Nuclear Installations, 2014 A direct numerical simulation of the boiling phenomena is one of the promising approaches in order to clarify their heat transfer characteristics and discuss the mechanism.
Tomoaki Kunugi, Yasuo Ose
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Direct numerical simulation of turbulent scalar transport across a flat surface [PDF]
, 2014 To elucidate the physical mechanisms that play a role in the interfacial transfer of atmospheric gases into water, a series of direct numerical simulations of mass transfer across the air-water interface driven by isotropic turbulence diffusing from ...
Herlina, H +3 more
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Potential Vorticity Generation in Breaking Gravity Waves
Atmosphere, 2023 Potential vorticity (PV) is an important quantity in stratified flows because it is conserved following the flow in the absence of forcing and viscous and diffusive effects.
Michael L. Waite, Nicholas Richardson
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