Effects of turbulent boundary layer thickness on flow around a low-rise rectangular prism

被引：1

作者：

Kim, KC ^{[1
]}

Ji, HS ^{[1
]}

Seong, SH ^{[1
]}

机构：

[1] Pusan Natl Univ, Sch Mech Engn, Pusan 609735, South Korea

来源：

WIND AND STRUCTURES | 2005年 / 8卷 / 06期

关键词：

turbulent boundary layer; atmospheric boundary layer (ABL); PIV; flow around a rectangular prism;

D O I：

10.12989/was.2005.8.6.455

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The effects of upstream velocity profiles on the flow around a low-rise rectangular prism submerged in a turbulent boundary layer have been investigated. Three different boundary layer profiles are generated, which are characterized by boundary layer height, displacement thickness, and momentum thickness. Flow characteristics variations caused by the different layers such as those in turbulent kinetic energy distribution and locations of re-circulating cavities and reattachment points have been precisely measured by using a PIV (Particle linage Velocimetry) technique. Observations were made in a boundary layer wind tunnel at Re-H = 7900, based on a model height of 40 nun and a free stream velocity of 3 m/s with 15-20% turbulence intensity.

引用

页码：455 / 467

页数：13

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