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Quadruple hot-wire probes in a simulated wall flow

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Abstract

A method for calibration and measurement with a fourwire probe is described. The method does not require any assumption about the response of the wires and it is not necessary to know the exact probe geometry. Measurements in a two-dimensional turbulent boundary layer showed large errors in the \(\overline {\upsilon \prime w\prime } \) shear stress, although the probe had a wire arrangement practically insensitive to mean velocity gradients normal to the wall. The problem seems to be caused by the strong instantaneous spanwise velocity gradients, as suggested by the computed response of a simple probe model inserted into a numerical flow obtained by direct simulation.

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Authors and Affiliations

  1. Institut für Fluiddynamik, Eidgenössische Technische Hochschule Zürich, ETH-Zentrum, CH-8092, Zürich, Switzerland

    L. Pompeo & H. Thomann

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  1. L. Pompeo
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  2. H. Thomann
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Pompeo, L., Thomann, H. Quadruple hot-wire probes in a simulated wall flow. Experiments in Fluids 14, 145–152 (1993). https://doi.org/10.1007/BF00189503

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  • DOI: https://doi.org/10.1007/BF00189503

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