AM05-01-010 軸対称噴流の稼働突起による制御に関する実験的研究(乱流現象の制御・流れの抵抗低減3,一般講演)

概要

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It is known that the structure of the jet can be changed greatly by arranging of the tabs set in the potential core area. The aim of this study is to make an active control of an axisymmetric jet by the five "operating tabs" which are arranged radiately in the just outside of the skimmer exit. In this paper, the details of the experimental apparatus are described. By using 21 I-type hot wire probes, the variation of profile of the mean velocity at x_1/d=15 was examined, when the tabs are in the stationary state. The diameter of the jet exit is d=30mm, and the Reynolds number U_Jd/ν is about 40,000 (U_J is the initial velocity of the jet, ν is the kinematic viscosity). As a result, several flow patterns were realized. This suggests the possibility of the active control of the jet structure.
日本流体力学会の論文
2005-09-05