Vortex shedding and surface pressures on a square cylinder at incidence to a uniform air stream

Jerry M. Chen; China-Hung Liu

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Vortex shedding and surface pressures on a square cylinder at incidence to a uniform air stream

机译：均匀气流入射时方筒上的涡旋脱落和表面压力

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This article describes results of experiments on vortex-shedding frequencies and surface pressures of a square cylinder at non-zero angle of incidence. The range of Reynolds numbers was 2000-21000, but the lower range was emphasized. For Reynolds numbers greater than 5300, the Strouhal number shows a similar trend with changing angle of incidence; that is, a rapid rise in Strouhal number occurs at an angle of around 13·. The occurrence of such a jump in Strouhal number was found to be associated with onset of the flow reattachment, bringing in a strong pressure recovery on the lower side face of the cylinder.

机译：本文介绍了在非零入射角下方筒的涡流脱落频率和表面压力的实验结果。雷诺数的范围是2000-21000，但是强调了较低的范围。对于大于5300的雷诺数，斯特劳哈尔数随入射角的变化显示出相似的趋势；就是说，斯特劳哈尔数以大约13°的角度快速上升。发现斯特劳哈尔数的这种跳跃与流重新连接的开始有关，从而在缸体的下侧面上带来了强大的压力恢复。

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《International Journal of Heat and Fluid Flow》 |1999年第6期|p.592-597|共6页
作者
Jerry M. Chen; China-Hung Liu;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类流体力学;
关键词
Square cylinder; Vortex shedding; Flow reattachment;

机译：方筒;涡流脱落;流程重新连接;

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Vortex shedding and surface pressures on a square cylinder at incidence to a uniform air stream

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