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

共 15 条

[1] EXPERIMENTS ON FLOW PAST SPHERES AT VERY HIGH REYNOLDS-NUMBERS
ACHENBACH, E
[J]. JOURNAL OF FLUID MECHANICS, 1972, 54 (AUG8) : 565 - +
[2] CONSTANTINESCU GS, 2000, 20000540 AIAA
[3] CONSTANTINESCU GS, 2002, UNPUB PREDICTION TUR
[4] NUMERICAL-METHOD FOR COUPLED FLUID-FLOW, HEAT-TRANSFER AND STRESS-ANALYSIS USING UNSTRUCTURED MOVING MESHES WITH CELLS OF ARBITRARY TOPOLOGY
DEMIRDZIC, I
MUZAFERIJA, S
[J]. COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, 1995, 125 (1-4) : 235 - 255
[5] Modeling turbulent wall flows subjected to strong pressure variations
Hanjalic, K
Hadzic, I
Jakirlic, S
[J]. JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 1999, 121 (01): : 57 - 64
[6] Flow past a sphere up to a Reynolds number of 300
Johnson, TA
Patel, VC
[J]. JOURNAL OF FLUID MECHANICS, 1999, 378 : 19 - 70
[7] OBSERVATIONS OF THE FREQUENCIES IN A SPHERE WAKE AND OF DRAG INCREASE BY ACOUSTIC EXCITATION
KIM, HJ
DURBIN, PA
[J]. PHYSICS OF FLUIDS, 1988, 31 (11) : 3260 - 3265
[8] LEDER A, 1993, LASER ANEMOMETRY ADV, V2052, P119
[9] A STUDY ON VORTEX SHEDDING FROM SPHERES IN A UNIFORM-FLOW
SAKAMOTO, H
HANIU, H
[J]. JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 1990, 112 (04): : 386 - 392
[10] SEIDL V, 1997, THESIS U HAMBURG

← 1 2 →