Cavitating Flows around a NACA0015 Hydrofoil and a Bluff Body. The Effect of Cavitation on urbulent Structure of the Flows

摘要：

In the work, cavitating flows around a twodimensional foil of NACA0015 series and a bluff symmetrical body were studied experimentally by means of PIV/LIF technique and high-speed imaging. The flows were investigated for different angles of incidence (from 0° up to 9°) and cavitation numbers (from 0,7 to 2,4), which allowed to register various patterns of partial cavities. Cavitation inception and development were of a particular interest in this study. As a result, instantaneous velocity and vorticity fields were measured and an analysis of instantaneous structure and evolution of partial cavities was performed. Finally, the full set of statistical moments of turbulent fluctuations (including the third-order ones) was calculated for cavitation and cavitation-free conditions. The paper reports the effects of body shape and cavitation pattern on the turbulent structure of the flows.

关键词： cavitation partial cavities bubbly flow PIV turbulence flow separation cavity visualization

作者: A.Yu. Kravtsova D.M. Markovich K.S. Pervunin M.V. Timoshevskiy

作者单位: Kutateladze Institute of Thermophysics SB RAS, Lavrentyev Avenue 1, 630090, Novosibirsk, Russia Kutateladze Institute of Thermophysics SB RAS, Lavrentyev Avenue 1, 630090, Novosibirsk, Russia Dep Kutateladze Institute of Thermophysics SB RAS,Lavrentyev Avenue 1, 630090, Novosibirsk, Russia Kutateladze Institute of Thermophysics SB RAS, Lavrentyev Avenue 1, 630090, Novosibirsk, Russia Depa

会议类型: 国际会议

会议名称: The 7th International Symposium on Measurement Techniques for Multiphase Flows(第七届国际多相流测试技术会议)

会议地点: 天津

会议语种:英文

页码: 67-74

在线出版日期: 2011-09-17（万方平台首次上网日期，不代表论文的发表时间）