Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/75074
Title: Response of flush-mounted hot-wire and hot-film wall shear stress probes
Authors: Chew, Y.T. 
Khoo, B.C. 
Lim, C.P.
Issue Date: 1997
Citation: Chew, Y.T.,Khoo, B.C.,Lim, C.P. (1997). Response of flush-mounted hot-wire and hot-film wall shear stress probes. American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED 12 : -. ScholarBank@NUS Repository.
Abstract: The present study continues the preliminary work of Khoo et al (1997) using the apparatus designed for generating a known near-wall fluctuating flow field to quantify the dynamic response of a flush-mounted hot-element wall shear stress gauge. Two different types of wall shear stress gauges were used in our experiment: a flush-mounted hot-wire in contact with the wall substrate and commercially-available quartz substrate hot-film gauges with different thickness of quartz coating. The flush-mounted hot-wire gauge was found to have a much higher dynamic response compared to 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.
Source Title: American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
URI: http://scholarbank.nus.edu.sg/handle/10635/75074
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