Dynamic response of a hot-wire anemometer. Part II: A flush-mounted hot-wire and hot-film probes for wall shear stress measurements

被引：42

作者：

Chew, YT ^{[1
]}

Khoo, BC ^{[1
]}

Lim, CP ^{[1
]}

Teo, CJ ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Mech & Prod Engn, Singapore 119260, Singapore

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 1998年 / 9卷 / 05期

关键词：

dynamic response; flush-mounted hot wire; hot-film wall shear stress gauge; wall shear stress fluctuations;

D O I：

10.1088/0957-0233/9/5/006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present study continues the work described in Part I of this paper in utilizing a specifically designed apparatus for generating a known near-wall fluctuating flow field for the purpose of quantifying the dynamic response of a flush-mounted hot-element wall shear stress gauge. Two different types of wall shear stress gauges were tested: a flush-mounted hot wire in contact with the wall substrate and commercially available quartz substrate hot-film gauges with different thicknesses of quartz coating, It is found that the flush-mounted hot-wire gauge has a much higher dynamic response than the quartz substrate gauges, although it is still lower than the marginally elevated hot-wire configuration, This may suggest the possible use of a marginally elevated hot wire as a wall shear stress gauge to ensure sufficient responsiveness for time-resolved wall shear stress measurements.

引用

页码：764 / 778

页数：15

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