ISSN:
1432-2153
Keywords:
Key words: 3-D Flow Visualization, Holographic Interferometry, Numerical Analysis, Shock Reflection
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
,
Technology
Notes:
Abstract. This paper presents an experimental and numerical investigation of three-dimensional shock wave reflections over a corner of two wedges intersecting perpendicularly in a shock tube. Experiments were conducted in a $100\,{\rm mm} \times 180\,{\rm mm}$ diaphragmless shock tube equipped with double-exposure diffuse holographic interferometry in which the time interval between the first and second exposure was set to be $1 \,{\rm \mu s}$ . This arrangement clearly visualized complex configurations of three-dimensional shock wave reflections. A numerical study was also carried out for interpreting these holographic interferometric observations by using the Weighted Average Flux (WAF) method to solve the three-dimensional unsteady compressible Euler equations. It was found that along the line of the intersection of these two wedges, two Mach stems intersected each other resulting in the formation of a Mach stem which leaned forward.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s001930050067
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