期刊
FLOW MEASUREMENT AND INSTRUMENTATION
卷 26, 期 -, 页码 102-110出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.flowmeasinst.2012.04.014
关键词
S-PIV; Ekman layer; Turbulence
This paper reports on laboratory experiments concerning frictional rotating turbulent boundary layers in spin-up flow over a flat horizontal bottom. Three-component velocity fields are obtained by Stereoscopic Particle Image Velocimetry. An original reconstruction algorithm, based on Tsai's camera model, has been developed on the basis of a linear approximation on the acquisition plane. The new technique, allowing any geometrical camera configuration, is validated using three-dimensional target translation test cases. Velocity measurements are thus performed on the Ekman layer, showing a remarkable agreement with the Ekman theoretical predictions in the laminar regime and providing original data on the turbulent regime. (C) 2012 Elsevier Ltd. All rights reserved.
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