Large-eddy simulation of a turbulent mixing layer
摘要：
The three dimensional, time dependent (incompressible) vorticity equations were used to simulate numerically the decay of isotropic box turbulence and time developing mixing layers. The vorticity equations were spatially filtered to define the large scale turbulence field, and the subgrid scale turbulence was modeled. A general method was developed to show numerical conservation of momentum, vorticity, and energy. The terms that arise from filtering the equations were treated (for both periodic boundary conditions and no stress boundary conditions) in a fast and accurate way by using fast Fourier transforms. Use of vorticity as the principal variable is shown to produce results equivalent to those obtained by use of the primitive variable equations.
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关键词：
engineering turbulent flow boundary layers boundary conditions mixing numerical solution simulation fluid flow layers 420400* -- engineering-- heat transfer & fluid flow
DOI：
http://dx.doi.org/
被引量：
年份：
1978
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