Journal
2014 ASIA-PACIFIC INTERNATIONAL SYMPOSIUM ON AEROSPACE TECHNOLOGY, APISAT2014
Volume 99, Issue -, Pages 665-670Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.proeng.2014.12.587
Keywords
Reynolds stress model(RSM); wall oscillation; turbulent channel flow; Reynolds stress; turbulent drag reduction
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A variety of studies have showed that wall oscillation contributes much to skin-friction drag reduction, however, the mechanism of drag reduction has not been fully understood. In this paper, one of the common wall-bounded turbulent flows to simulate is the fully developed turbulent flow in a plane channel. Based on the RSM, the numerical simulation results of the distribution among different components of Reynolds stresses are obtained under the action of oscillation or not, respectively. It is found that wall oscillation suppresses turbulent intensity and leads to skin-friction drag reduction, because of the significant role played by the pressure-strain term. (C) 2015 Published by Elsevier Ltd.
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