Results 11 to 20 of about 95,386 (312)
Direct Numerical Simulation of Water Droplets in Turbulent Flow
Fluids, 2020 Details on the fall speeds of raindrops are essential in both applications and natural events, such as rain-rate retrieval and soil erosion. Here, we examine the influence of turbulence on the terminal velocity of two water drops of different sizes.
Weibo Ren +2 more
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Direct Numerical Simulation of Active-Controlled Impinging Jets
Journal of Fluid Science and Technology, 2009 In order to improve the heat transfer on the wall, impinging jets are used in various industrial applications, and have been investigated experimentally and numerically so far.
Koichi TSUJIMOTO +3 more
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Direct numerical simulation of turbulence over two-dimensional waves
AIP Advances, 2020 Knowledge of turbulent flows over non-flat surfaces is of major practical interest in diverse applications. Significant work continues to be reported in the roughness regime at high Reynolds numbers where the cumulative effect of surface undulations on ...
Balaji Jayaraman, Saadbin Khan
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Direct numerical simulation for modification of sinusoidal riblets
Journal of Fluid Science and Technology, 2016 This paper proposes a new riblet configuration. A traditional sinusoidal riblet was modified with the aim of reducing pressure drag. The height of the side wall in the newly configured riblet is lowered toward the node of the sinusoidal curve to reduce ...
Kie OKABAYASHI
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Turbulent diffusion: Direct numerical simulation [PDF]
PAMM, 2009 AbstractDirect numerical simulations (DNS) of a vibrating grid turbulence at two different Reynolds numbers (based on an amplitude and frequency of the grid) Re = 500, 1000 are presented. The evolution of a turbulent/non‐turbulent interface was detected and compared to the theoretical results obtained in the paper [1] using Lie group analysis of the ...
George Khujadze, Martin Oberlack
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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 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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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 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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