Direct numerical simulation of turbulent mixing

The results of three-dimensional numerical simulations of turbulent flows obtained by various authors are reviewed. The paper considers the turbulent mixing (TM) process caused by the development of the main types of instabilities: those due to gravitation (with either a fixed or an alternating-sign...

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Bibliographic Details
Published in:Philosophical transactions of the Royal Society of London. Series A: Mathematical, physical, and engineering sciences physical, and engineering sciences, 2013-11, Vol.371 (2003), p.1-19
Main Authors: Statsenko, V. P., Yanilkin, Yu. V., Zhmaylo, V. A.
Format: Article
Language:English
Subjects:
Buoyancy
Direct numerical simulation
Fluid shear
Liquids
Physics
Shock waves
Time dependence
Turbulence
Turbulent mixing
Viscosity
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Summary:The results of three-dimensional numerical simulations of turbulent flows obtained by various authors are reviewed. The paper considers the turbulent mixing (TM) process caused by the development of the main types of instabilities: those due to gravitation (with either a fixed or an alternating-sign acceleration), shift and shock waves. The problem of a buoyant jet is described as an example of the mixed-type problem. Comparison is made with experimental data on the TM zone width, profiles of density, velocity and turbulent energy and degree of homogeneity.
ISSN:1364-503X
1471-2962