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Spatial Resolution Correction for Electrochemical Wall-shear Stress Measurements using Rectangular Sensors

Abstract : This article is mainly motivated by the growing needs for highly resolved measurements forwall-bounded turbulent flows and aims to proposes a spatial correction coefficient in order toincrease the wall-shear stress sensors accuracy. As it well known for the hot wire anemometry, thefluctuating streamwise velocity measurement attenuation is mainly due to the spatial resolution andthe frequency response of the sensing element. The present work agrees well with this conclusionand expands it to the wall-shear stress fluctuations measurements using electrochemical sensors andsuggested a correction method based on the spanwise correlation coefficient to take into accountthe spatial filtering effects on unresolved wall-shear stress measurements due to too large sensorspanwise size
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Submitted on : Thursday, November 25, 2021 - 9:56:36 AM
Last modification on : Friday, November 26, 2021 - 3:45:39 AM

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Fawzi Fadla, Rogelio Chovet, Denis Cornu, Marc Lippert, Fethi Aloui, et al.. Spatial Resolution Correction for Electrochemical Wall-shear Stress Measurements using Rectangular Sensors. Journal of Applied Fluid Mechanics, Isfahan Isfahan University of Technology, 2016, 9 (3), pp.1309-1319. ⟨10.18869/acadpub.jafm.68.228.23945⟩. ⟨hal-03448317⟩

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