Experimental study of the pressure drop after fractal-shaped orifices in turbulent pipe flows

被引：35

作者：

Aly, A. Abou El-Azm ^{[1
]}

Chong, A. ^{[2
]}

Nicolleau, F. ^{[2
]}

Beck, S. ^{[2
]}

机构：

[1] Mil Tech Coll, Dept Mech Power, Cairo, Egypt

[2] Univ Sheffield, Dept Mech Engn, Sheffield S1 3JD, S Yorkshire, England

来源：

EXPERIMENTAL THERMAL AND FLUID SCIENCE | 2010年 / 34卷 / 01期

关键词：

Fractal-shaped orifices; Pressure drop; Turbulent flow; Flowmeter;

D O I：

10.1016/j.expthermflusci.2009.09.008

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Fractal-shaped orifices are thought to have a significant effect on the flow mixing properties downstream a pipe owing to their edge self-similarity shape. Here, we investigate the pressure drop after such fractal orifices and measure the pressure recovery at different stations downstream the orifice. A direct comparison is made with the pressure drop measured after regular circular orifices with the same flow area. Our results show that the fractal-shaped orifices have a significant effect on the pressure drop. Furthermore, the pressure drop measured across the fractal-shaped orifices is found to be lower than that from regular circular orifices of the same flow areas. This result could be important in designing piping systems from the point of view of losses. It looks promising to use the fractal-shaped orifices as flowmeters as they can sense the pressure drop across them accurately with lower losses than the regular circular-shaped ones. (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：104 / 111

页数：8

共 10 条

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