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https://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 |
Appears in Collections: | Staff Publications |
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