Growth of shocked gaseous interfaces in a conical geometry

• DOI: 10.1063/1.1608011
• Publication Date: 2003-09-12T01:03:21Z
• Authors: Sanjay Kumar; H. G. Hornung; B. Sturtevant
• Keywords: Soap film

The results of experiments on Richtmyer–Meshkov instability growth multimode initial perturbations an air–sulfur hexafluoride (SF6) interface in a conical geometry are presented. done relatively larger shock tube. A nominally planar is formed by sandwiching polymeric membrane between wire-mesh frames. single incident wave ruptures the resulting perturbations. develops from action baroclinically deposited vorticity at interface. visual thickness δ measured schlieren photographs obtained each run. Data presented for times when has become turbulent. data compared with Vetter [Shock Waves 4, 247 (1995)] which were straight test section geometry, to illustrate effects area convergence. It found images that grows about 40% 50% more rapidly than Vetter’s experiments. Laser induced scattering used capture air–helium late times. Image processing pictures also determine cases where it was not clear and obtain dominant eddy–blob sizes mixing zone. Some computational studies show global changes implodes into both light–heavy heavy–light cases.