Computation of separated-flow transition using a two-layer model of turbulence

被引：0

作者：

Papanicolaou, E.L. ^{[1
]}

Rodi, W. ^{[2
]}

机构：

[1] Inst. Thermische Stromungsmaschinen, Universität Karlsruhe (TH), Karlsruhe, Germany

[2] Institut für Hydromechanik, Universität Karlsruhe (TH), Karlsruhe, Germany

来源：

Journal of Turbomachinery | 1999年 / 121卷 / 01期

关键词：

Bubble formation - Correlation methods - Laminar flow - Mathematical models - Numerical analysis - Reynolds number - Transition flow - Turbulent flow;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A two layer model of turbulence is employed to predict transition in flows, along with a suitably defined intermittency function, which takes appropriate values in the laminar, transitional, and turbulent flow regions. Correlations derived from measurements are used for this purpose. Two test cases were selected: the flow over a long horizontal body with semicircular leading edge and the flow over the backward facing step of small height. The Reynolds number, based on the diameter in the first case and on the step height in the second, lie in the range of 1600-6600, in which limited numerical investigations were previously available and where bubbles with laminar separation and turbulent reattachment are expected.

引用

页码：78 / 87

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