EXPERIMENTAL STUDY ON SUPPRESSION OF VORTEX STREET BEHIND PERFORATED SQUARE CYLINDER

被引：6

作者：

Teimourian, Amir ^{[1
]}

Hacisevki, Hasan ^{[1
]}

Bahrami, Arian ^{[1
]}

机构：

[1] Eastern Mediterranean Univ, Aerodynam Lab, Dept Mech Engn, Famagusta, Northern Cyprus, Turkey

来源：

JOURNAL OF THEORETICAL AND APPLIED MECHANICS | 2017年 / 55卷 / 04期

关键词：

vortex shedding; flow control; coherent flow structure; perforated square cylinder; UNIFORM INJECTION; HEAT-TRANSFER; AERODYNAMIC PARAMETERS; REYNOLDS-NUMBERS; TURBULENT-FLOW; FLUID FORCES; SUCTION; SURFACE; TANDEM;

D O I：

10.15632/jtam-pl.55.4.1397

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In this study, the effects of entrainment of a fluid through a perforated surface on suppression of the vortex street behind a perforated square cylinder have been studied experimentally. The wake region has been investigated in terms of coherent flow structure, time averaged properties and effectiveness of different perforations. The quantitative measurements revealed that the perforated surfaces are only effective within a width interval of y/D = +/- 1.0. It has been observed that in the near wake region up to approximately 1.5D downstream the wake, the shedding phenomenon has been suppressed significantly. It has been also demonstrated that velocity profiles and flow structure have been affected by different perforated surfaces and, as a result, coherent structures have been diminished considerably.

引用

页码：1397 / 1408

页数：12

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