Appraisal of cavity hot-wire probes for wall-shear-stress measurements
نویسندگان
چکیده
Abstract Flush-mounted cavity hot-wire probes have emerged as an alternative to classical mounted several diameters above the surface for wall-shear stress measurements. They aim at increasing frequency response and accuracy by circumventing well-known issue of heat transfer substrate that hot-film possess. Their use, however, depends on assumption does not influence flow field. In this study, we show hold, turbulence statistics are modified presence with sizes practically in use. The mean velocity fluctuations increase near while shear decreases its surroundings, all seemingly stemming from fact no-slip condition is present anymore reversal occurs. Overall, energy spectra probability density function wall indicate a change nature cavity.
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ژورنال
عنوان ژورنال: Experiments in Fluids
سال: 2022
ISSN: ['0723-4864', '1432-1114']
DOI: https://doi.org/10.1007/s00348-022-03498-3