Please use this identifier to cite or link to this item: https://doi.org/5/006
Title: Dynamic response of a hot-wire anemometer. Part II: A flush-mounted hot-wire and hot-film probes for wall shear stress measurements
Authors: Chew, Y.T. 
Khoo, B.C. 
Lim, C.P.
Teo, C.J. 
Issue Date: May-1998
Source: Chew, Y.T.,Khoo, B.C.,Lim, C.P.,Teo, C.J. (1998-05). Dynamic response of a hot-wire anemometer. Part II: A flush-mounted hot-wire and hot-film probes for wall shear stress measurements. Measurement Science and Technology 9 (5) : 764-778. ScholarBank@NUS Repository. https://doi.org/5/006
Abstract: 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 shress gauge to ensure sufficient responsiveness for time-resolved wall shear stress measurements.
Source Title: Measurement Science and Technology
URI: http://scholarbank.nus.edu.sg/handle/10635/58130
ISSN: 09570233
DOI: 5/006
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