On the flow and vortex shedding characteristics of an in-line tube bundle in steady and pulsating crossflow

被引：28

作者：

Konstantinidis, E ^{[1
]}

Castiglia, D ^{[1
]}

Balabani, S ^{[1
]}

Yianneskis, M ^{[1
]}

机构：

[1] Kings Coll London, Ctr Heat Transfer & Fluid Flow Measurement, Dept Engn Mech, London WC2R 2ZS, England

来源：

CHEMICAL ENGINEERING RESEARCH & DESIGN | 2000年 / 78卷 / A8期

关键词：

heat exchangers; tube bundles; vortex shedding; pulsating flow; lock-on;

D O I：

10.1205/026387600528283

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Laser Doppler anemometry and flow visualization were employed to provide a detailed description of the flowfield around an in-line tube bundle in steady and pulsating crossflow of water. The steady flow results indicate that the amplitude of velocity fluctuations associated with vortex shedding and the turbulence levels in the bundle increase with increasing Re. A single mode of alternate vortex shedding with a constant Sr of 0.14, was found in all rows but the first one in steady flow. Pulsating flow incited vortex shedding from the first row and lock-on. As a result, vortex shedding was more pronounced and turbulence levels increased considerably downstream. It is envisaged that heat transfer in the tube bundle might be augmented by pulsating flow.

引用

页码：1129 / 1138

页数：10

共 26 条

[1] HEAT-TRANSFER AROUND TUBES IN IN-LINE TUBE BANKS [J].