Experimental and numerical studies of flow around sphere at sub-critical Reynolds number

被引：7

作者：

Hadzic, I ^{[1
]}

Bakic, V ^{[1
]}

Peric, M ^{[1
]}

Sajn, V ^{[1
]}

Kosel, F ^{[1
]}

机构：

[1] Tech Univ Hamburg, AB Fluiddynam & Schiffstheorie, D-22305 Hamburg, Germany

来源：

ENGINEERING TURBULENCE MODELLING AND EXPERIMENTS 5 | 2002年

关键词：

flow around sphere; sub-critical Re-number; laser-doppler anemometry; hot-wire anemometry; large eddy simulation;

D O I：

10.1016/B978-008044114-6/50064-8

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

This paper presents the experimental and numerical results for the flow around a sphere at suberitical Reynolds number of 50 000. Two experimental techniques, the hot-wire and the laser-doppler anemometry (HWA and LDA), are used to obtain the mean velocity field and the turbulence quantities. These two experiments provided very similar results. Results of a large-eddy simulation (LES) and several Reynolds-averaged Navier-Stokes (RANS) equation models are compared to the experimental results. The LES results are in reasonable agreement with experiments while RANS underpredict the drag coefficient up to 50% compared to experiments and turbulence quantities were predicted far from the experimental values.

引用

页码：667 / 676

页数：10

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