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Modelling the rapid spherical compression of isotropic turbulence

Modelling the rapid spherical compression of isotropic turbulence
Modelling the rapid spherical compression of isotropic turbulence
Rapid distortion analysis is used to modify the form of the closure model for the dissipation rate of the turbulent kinetic energy. The modification is such that the evolution of the dissipation rate during a rapid compression is predicted exactly; good agreement between the model prediction and direct simulation data is obtained. Previous closure proposals fail to properly predict the rapid compression case. The reason for the difference between the present and previous models is traced to the fact that previous workers neglected variations of kinematic viscosity
0899-8213
2255-2259
Coleman, G.N.
ea3639b9-c533-40d7-9edc-3c61246b06e0
Mansour, N.N.
4337df84-b487-4d7b-a0aa-de13ad975c66
Coleman, G.N.
ea3639b9-c533-40d7-9edc-3c61246b06e0
Mansour, N.N.
4337df84-b487-4d7b-a0aa-de13ad975c66

Coleman, G.N. and Mansour, N.N. (1991) Modelling the rapid spherical compression of isotropic turbulence. Physics of Fluids A - Fluids Dynamics, 3, 2255-2259. (doi:10.1063/1.857906).

Record type: Article

Abstract

Rapid distortion analysis is used to modify the form of the closure model for the dissipation rate of the turbulent kinetic energy. The modification is such that the evolution of the dissipation rate during a rapid compression is predicted exactly; good agreement between the model prediction and direct simulation data is obtained. Previous closure proposals fail to properly predict the rapid compression case. The reason for the difference between the present and previous models is traced to the fact that previous workers neglected variations of kinematic viscosity

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Published date: 1991
Organisations: Engineering Sciences
Learn more about Engineering Sciences research

Identifiers

Local EPrints ID: 71986
URI: http://eprints.soton.ac.uk/id/eprint/71986
DOI: doi:10.1063/1.857906
ISSN: 0899-8213
PURE UUID: 3f2aa546-8186-42e1-a0d6-20440a1326ce

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Date deposited: 14 Jan 2010
Last modified: 13 Mar 2024 20:53

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Contributors

Author: G.N. Coleman
Author: N.N. Mansour

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