One-equation turbulence model based on extended bradshaw assumption

Jinglei Xu, Yang Zhang, Junqiang Bai

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Aone-equation turbulence model is presented. The modeling tries to adopt a more reliable source and less empirical coefficients. The governing equation is the turbulent kinetic energy equation, in which e is closed phenomenologically. The stress intensity ratio t12/k is calibrated to be a function controlled by the local variables but not a constant 0.3. The extension of the Bradshaw assumption turns out to be of good accuracy, forming a new Reynolds stress constitutive relation. The two model coefficients are both extracted from one slice of the flat-plate boundary layer, yet extensive tests show that the model can significantly improve the precision of prediction for the boundary-layer flows, the adverse pressure gradient, shallow separation, transport effects, and massively separated flows.

Original languageEnglish
Pages (from-to)1433-1441
Number of pages9
JournalAIAA Journal
Volume53
Issue number6
DOIs
StatePublished - 2015

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