Visualization of Shock-vortex Interaction Radiating Acoustic Waves

被引：7

作者：

Chang S.M. ^{[1
]}

Chang K.S. ^{[2
]}

机构：

[1] Sch. of Mech. and Aerosp. Eng., College of Engineering, Seoul National University, Kwanak-gu, Seoul 151-742

[2] Department of Aerospace Engineering, Korea Adv. Inst. Sci. and Technol., Yusung-gu, Teajon 305-701

来源：

Journal of Visualization | 2000年 / 3卷 / 3期

关键词：

Acoustic waves; Computational fluid dynamics (CFD); Holographic interferometry; Shadowgraphy; Shock tube experiment; Shock wave diffraction; Vortexlets;

D O I：

10.1007/BF03181844

中图分类号：

学科分类号：

摘要：

Unsteady compressible flow fields past a wedge and a cone, evolved by propagation and interaction of shock waves, slip lines, and vortices, are studied by shadowgraphs and holographic interferograms taken during the shock tube experiment. The supplementary numerical calculation also presented time-accurate solution of the shock wave physics which was essential to recognize the similarity and dissimilarity between the wedge and the conical flows. The decelerated shock detained by the vortex interacts with the small vortexlets along the slip layer, producing diverging acoustics: this phenomenon is more distinct in the case of wedge flow for a given shock Mach number. The decelerated shock penetrated through the vortex core constitutes a transmitted shock, which eventually merges with the diaphragm shock that bridges the vortex pair/vortex ring. This phenomenon became remarkably salient in the case of conical flow.

引用

页码：221 / 228

页数：7

共 11 条

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[2]

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