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A prediction of the pressure field in a plane turbulent jet using an algebraic stress model
Author(s) -
Bergstrom Donald J.
Publication year - 1992
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.1650140803
Subject(s) - reynolds stress , turbulence , jet (fluid) , mechanics , isotropy , mathematics , field (mathematics) , momentum (technical analysis) , plane (geometry) , stress field , physics , classical mechanics , mathematical analysis , geometry , thermodynamics , finite element method , optics , finance , pure mathematics , economics
A numerical prediction is obtained for the mean pressure field in the similarity region of a plane turbulent jet. An algebraic stress model, which introduces non‐isotropic relations for the Reynolds stress components, is used to close the mean momentum equation. The full two‐dimensional form of the transport equations is retained and the resultant equation set solved elliptically. The numerical prediction simulates many of the characteristics of the pressure field measured by experimental studies. However, the overall level of the predicted field is lower than the experimental values. The level obtained for the mean pressure field depends strongly on the prediction for the transverse normal Reynolds stress component 〈 u 2 u 2 〉. The pressure field is shown to represent a small negative contribution to the net strearnwise momentum balance.