Compressible vortex loops studies in a shock tube with various exit geometries

Zare-Behtash, H., Kontis, K. and Takayama, K. (2008) Compressible vortex loops studies in a shock tube with various exit geometries. In, 46th AIAA Aerospace Sciences Meeting and Exhibit. (46th AIAA Aerospace Sciences Meeting and Exhibit) (doi:10.2514/6.2008-362).

Record type: Book Section

Abstract

The study involves the shock wave and consequent vortex loop generated when a shock tube with various nozzle geometries is employed. It aims to provide insight into the fun- damental physics of these compressible phenomena. The nozzles include a 5 mm circular nozzle, a 30×30 mm square, two elliptical nozzles with minor to major axes ratios of 0.4 and 0.6 and two exotic nozzles resembling a pair of lips with minor to major axes ratios of 0.2 and 0.5. The experiments are performed for driver gas (air) pressure of 4 bar, with pressure in the driven section being atmospheric. The critical driver length has been utilized for each diaphragm pressure ratio. Schlieren and shadowgraphy as well as the PIV technique are employed in order to visualize and quantify the flow field for each of the test cases. Copyright © 2008 by H. Zare-Behtash, K. Kontis.

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