Measurement of extreme aerodynamic interference forces acting on circular cylinders in turbulent boundary layers

被引：5
|
作者：
Kroenke, I.
Sockel, H.
机构：
[1] TU Vienna, Inst Fluid Mech & Heat Transfer, A-1140 Vienna, Austria
[2] Vienna Univ Technol, Inst Fluid Mech & Heat Transfer, A-1040 Vienna, Austria
来源：
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS | 2007年 / 95卷 / 9-11期
关键词：
interference; circular cylinders; turbulent boundary layer; wind tunnel model;
D O I：
10.1016/j.jweia.2007.02.009
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Extreme interference wind loads on circular cylinders are investigated in wind tunnel simulations of atmospheric boundary layers with high turbulence levels. Since for circular cylinders interference effects caused by vortex shedding are pronounced, the present work tries to clarify to which extent turbulence effects are reducing the interference in this case. Aerodynamic forces and moments were measured with a piezoelectric six-component wind tunnel balance. The balance is distinguished by a large dynamic range, low interferences and a high natural frequency. The numerous results include comparisons of mean values, r.m.s. values and extreme values of force coefficients with and without interference with reference to the velocity profiles and the turbulence levels in two different boundary layer simulations. Conclusions are drawn with regard to the application of the results in estimating wind loads on cylindrical structures. (C0 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1229 / 1241
页数：13
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