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Numerical experiments in homogeneous turbulenceThe direct simulation methods developed by Orszag and Patternson (1972) for isotropic turbulence were extended to homogeneous turbulence in an incompressible fluid subjected to uniform deformation or rotation. The results of simulations for irrotational strain (plane and axisymmetric), shear, rotation, and relaxation toward isotropy following axisymmetric strain are compared with linear theory and experimental data. Emphasis is placed on the shear flow because of its importance and because of the availability of accurate and detailed experimental data. The computed results are used to assess the accuracy of two popular models used in the closure of the Reynolds-stress equations. Data from a variety of the computed fields and the details of the numerical methods used in the simulation are also presented.
Document ID
19810022965
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Rogallo, R. S. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
September 4, 2013
Publication Date
September 1, 1981
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
NASA-TM-81315
Report Number: NASA-TM-81315
Accession Number
81N31508
Funding Number(s)
PROJECT: RTOP 505-51-11
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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