Results 21 to 30 of about 817,469 (302)
Direct numerical simulation of driven cavity flows [PDF]
Applied Scientific Research, 1993 Direct numerical simulations of 2D driven cavity flows have been performed. The simulations exhibit that the flow converges to a periodically oscillating state at Re=11,000, and reveal that the dynamics is chaotic at Re=22,000. The dimension of the attractor and the Kolmogorov entropy have been computed.
Verstappen, R. +2 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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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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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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Direct numerical simulations of aeolian sand ripples [PDF]
Proceedings of the National Academy of Sciences, 2014 Significance Wind ripples decorate the flanks of dunes in amazingly regular patterns, on both Earth and Mars. Their emergence at a wavelength much larger than the grain size is currently unexplained. We report direct numerical simulations of grains interacting with a wind flow that are, for the first time to our knowledge, able to reproduce ...
Durán, Orencio +2 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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Optimal Taylor–Couette flow: direct numerical simulations [PDF]
Journal of Fluid Mechanics, 2013 AbstractWe numerically simulate turbulent Taylor–Couette flow for independently rotating inner and outer cylinders, focusing on the analogy with turbulent Rayleigh–Bénard flow. Reynolds numbers of $R{e}_{i} = 8\times 1{0}^{3} $ and $R{e}_{o} = \pm 4\times 1{0}^{3} $ of the inner and outer cylinders, respectively, are reached, corresponding to Taylor ...
Ostilla, R +4 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 supercritical annular electroconvection [PDF]
Physical Review E, 2007 We use direct numerical simulation to study electrically driven convection in an annular thin film. The simulation models a laboratory experiment that consists of a weakly conducting, submicron thick liquid crystal film suspended between two concentric electrodes. The film is driven to convect by imposing a sufficiently large voltage across it.
Tsai, Peichun Amy +3 more
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