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BY-NC-ND 3.0 license Open Access Published by De Gruyter Open Access September 25, 2015

Analysis of hot-wire measurements accuracy in turbulent boundary layer

Artur Drózdz and Witold Elsner
From the journal Open Engineering

Abstract

This paper discusses the issue of measuring velocity fluctuations of turbulent boundary layer using hot-wire probes. The study highlights the problem of spatial resolution, which is essential when measuring small-scales in wall-bounded flows. Additionally, attention was paid to the inconsistency in streamwise fluctuation measurements using single- and X-wire probes. To clarify this problem, the energy spectra using wavelet transformation were calculated. The analysis was performed for turbulent boundary layer flow, which was characterized by Reynolds number based on the friction velocity equal Reτ≈ 1000.

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Received: 2015-1-23
Accepted: 2015-5-13
Published Online: 2015-9-25

© 2015

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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