Two-component instantaneous wall shear rate measurements in reversing flows
Fluid Dynamics
2017-10-17 v1
Abstract
Validation experiments of the two-dimensional inverse algorithm are performed in a pulsed Poiseuille flow exposing shear reversal phases. The method is applied to the three-segment electrodiffusion (ED) probe for which a specific nondimensionalization process is suggested, allowing to better link measurements from a real ED probe to the modeled one in the inverse problem. This approach provided a two-component wall shear rate in good agreement with the one obtained from laser Doppler anemometry (LDA) measurements, thus validating the ability of ED probes to deal with high-amplitude unsteady flows. The classic linear velocity approximation () in the probe vicinity is also investigated in such a flow.
Cite
@article{arxiv.1710.05486,
title = {Two-component instantaneous wall shear rate measurements in reversing flows},
author = {M. -É. Lamarche-Gagnon and V. Sobolík and J. Vétel},
journal= {arXiv preprint arXiv:1710.05486},
year = {2017}
}