Allowance for Gas Compressibility in the γ-Model of the Laminar-Turbulent Transition

被引：4

作者：

Matyash, E. S. ^{[1
]}

Savelyev, A. A. ^{[1
]}

Troshin, A., I ^{[1
]}

Ustinov, M., V ^{[1
]}

机构：

[1] Natl Res Ctr, Zhukovsky Inst, Cent Aerohydrodynam Inst TsAGI, Zhukovskii 140180, Moscow Oblast, Russia

来源：

COMPUTATIONAL MATHEMATICS AND MATHEMATICAL PHYSICS | 2019年 / 59卷 / 10期

基金：

俄罗斯基础研究基金会;

关键词：

computational gas dynamics; laminar-turbulent transition; gamma-model; gas compressibility; laminar airfoil; engine nacelle;

D O I：

10.1134/S0965542519100117

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

The formulation and applicability range of the gamma-model of laminar-turbulent transition are analyzed. Its implementation in the EWT-TsAGI application package and verification results for the problem of computing a transitional boundary layer on a plate are described. The cases of zero and adverse pressure gradients are considered. A modification of the gamma-model that takes into account the effect of compressibility on the laminar-turbulent transition location is proposed. Two problems are considered to calibrate and test the correction term: the flow over the LV6 laminar-flow airfoil and the flow over the nacelle of a bypass turbojet engine. It is shown that, with the used of the proposed correction, the laminar-turbulent transition location can be correctly predicted in transonic flow regimes.

引用

页码：1720 / 1731

页数：12

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