20906 円錐に衝突する不足膨張噴流の流れ場の定量化(翼流れ・衝撃波,一般講演)

概要

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An underexpanded jet is widely applied in industries. When the underexpanded jet impinges on an object, a stand-off shock wave forms in front of it, with different geometries and locations depending on operating conditions of jet and shapes of the object. In this study, experiments are made on the underexpanded jet blown against the cone whose angles are 60 deg and 120 deg. To understand the flow field of underexpanded jet impinging on cone quantitatively, density distributions are obtained by applying Mach-Zehnder interferometry (MZI) and the corresponding pressure distributions on the cone surface are measured with pressure tap. Velocity distributions and streamlines are also estimated using the density distributions.
一般社団法人日本機械学会の論文
2009-03-05