Pressure drop characteristics of flow in a symmetric channel with periodically expanded grooves

被引：18

作者：

Adachi, Takahiro ^{[1
]}

Tashiro, Yamato ^{[1
]}

Arima, Hirofumi ^{[2
]}

Ikegami, Yasuyuki ^{[2
]}

机构：

[1] Akita Univ, Dept Mech Engn, Akita 0108502, Japan

[2] Saga Univ, Inst Ocean Energy, Saga 8408502, Japan

来源：

CHEMICAL ENGINEERING SCIENCE | 2009年 / 64卷 / 03期

关键词：

Pressure drop; Bifurcation; Grooved channel; Self-sustained oscillatory flow; Critical Reynolds number; SELF-SUSTAINED OSCILLATIONS; CONVECTIVE HEAT-TRANSFER; STABILITY; PARTS; WAVE;

D O I：

10.1016/j.ces.2008.10.041

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Pressure drop characteristics of flow in a periodically grooved channel are investigated experimentally. It is well known that a self-sustained oscillatory flow occurs from a steady-state flow at a certain critical Reynolds number in such grooved channels. The oscillatory flow enhances fluid mixing and leads to an increase in pressure drop. We measure the pressure drop with a pressure transducer. It is found that the pressure drop increases near the critical Reynolds numbers where the two- and three-dimensional oscillatory flows occur. In addition, the three-dimensional flow is confirmed by flow visualization. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：593 / 597

页数：5

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