Results 221 to 230 of about 37,077 (265)

On the Realizability of Nonlinear Stress–Strain Relationships for Reynolds Stress Closures

Flow, Turbulence and Combustion, 1998
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Rung, Thomas, Thiele, Frank, Fu, Song
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Generalizable Theory of Reynolds Stress

2021
We generalize the Lagrangian transport theory to include the normal and shear Reynolds stresses, so that a complete tensor can be constructed. The ideology is based on imposition of the momentum and energy balance to a control volume moving at the local mean velocity, which bears the effect of de-coupling the mean from the fluctuation components.
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A Reynolds-Stress Model for Near-Wall and Low-Reynolds-Number Regions

Journal of Fluids Engineering, Transactions of the ASME, 1988
The Reynolds stress model for high Reynolds numbers proposed by Launder et al. is extended to near-wall and low-Reynolds-number regions. In the development of the model, particular attention is given to the high anisotropy of turbulent stresses in the immediate vicinity of a wall and to the behavior of the exact stress equation at the wall. A transport
exaly   +2 more sources

Reynolds stresses in a lattice gas

Journal of Statistical Physics, 1992
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Reynolds Stress and Vorticity in Turbulent Wall Flows

Applied Scientific Research, 1993
Experimental measurements in a boundary layer and a large-eddy simulation of plane channel flow have been used to study the dynamics of vorticity and mass transport in the near- wall region. It was found that Reynolds stress generation occurs in the vicinity of quasi-streamwise vortices, and that smoke particles tend to be ejected from the wall near ...
A. Ugo Piomelli, B. Lawrence Ong, C. James Wallace, D. Faouzi Ladhari   +3 more
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Reynolds stress under a change of frame of reference

Physical Review E, 2001
In this paper, we study the characteristics of the Reynolds stress under a change of frame, as defined by the Euclidean group of transformation. We show that being subject to the dynamical processes induced from the mean Navier-Stokes equations, the invariance group of the fluctuating velocity and the Reynolds stress is no longer the Euclidean group of
Y N, Huang, F, Durst
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The Reynolds stress vector and tensor

Mathematical Models and Computer Simulations, 2012
It is noted that, in investigations of turbulent flows in viscous liquids described by Newton's equation in vector form, it is possible to present the Reynold stress in vector form.
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Contribution towards a Reynolds-stress closure for low-Reynolds-number turbulence

Journal of Fluid Mechanics, 1976
The problem of closing the Reynolds-stress and dissipation-rate equations at low Reynolds numbers is considered, specific forms being suggested for the direct effects of viscosity on the various transport processes. By noting that the correlation coefficient$\overline{uv^2}/\overline{u^2}\overline{v^2} $is nearly constant over a considerable portion of
Hanjalic, K., Launder, B. E.
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Developments in Measuring Reynolds Stresses

1987
Single, dual and multi-sensor hot-wire anemometry for measuring instantaneous velocities as well as time-averaged statistics in incompressible turbulent flows is reviewed with emphasis on accuracy of calibration and data reduction schemes and on methods applicable to high-intensity and recirculating flows.
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The effect of the Reynolds number on the Reynolds stresses and vorticity in a turbulent far-wake

Experimental Thermal and Fluid Science, 1998
Abstract Using two orthogonal arrays of 16 X-wires, eight in the ( x , y )-plane and eight in the ( x , z )-plane, the effect of the Reynolds number in a turbulent plane far-wake has been investigated for two values of Re θ (based on the free stream velocity and the momentum thickness), i.e. 1350 and 4600.
Y. Zhou, R.A. Antonia, W.K. Tsang
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