Holographic interferometric study of reflected shock transition over a cone with an angle of attack

Masato Watanabe; Kazuyoshi Takayama

doi:10.1117/12.140805

15 February 1993 Holographic interferometric study of reflected shock transition over a cone with an angle of attack

Masato Watanabe, Kazuyoshi Takayama

Proceedings Volume 1756, Interferometry: Applications; (1993) https://doi.org/10.1117/12.140805
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

Holographic interferometry has been applied to the visualization of shock wave phenomena. This paper describes the observation of three-dimensional shock wave reflection over cones and demonstrates that this flow visualization technique is more effective than other conventional techniques. It is well documented that, in a two-dimensional shock wave reflection over a wedge, regular reflection or Mach reflection occurs according to the shock Mach number and the wedge angle. Whereas in a three-dimensional flow field when a shock wave reflects from a cone with attack angle, depending on a local attack angle of the cone, either regular or Mach reflection occurs. Therefore, these two reflection patterns appear simultaneously on the cone surface. Very little is known about the transition from regular to mach reflection in three-dimensions. It is thus important to determine the three-dimensional shock transition angle between regular and mach reflection. In this paper, a shock wave reflected from a cone with attack angle was visualized quantitatively by using double exposure holographic interferometry and diffuse holographic interferometry.

Citation Download Citation

Masato Watanabe and Kazuyoshi Takayama "Holographic interferometric study of reflected shock transition over a cone with an angle of attack", Proc. SPIE 1756, Interferometry: Applications, (15 February 1993); https://doi.org/10.1117/12.140805

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KEYWORDS

Reflection

Holographic interferometry

Visualization

Holography

3D image reconstruction

Holograms

3D image processing

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