Abstract
Results of quantitative holographic interferometric flow visualization of cylindrical interface instability induced by converging cylindrical shock waves are reported. Experiments were conducted in an annular vertical co-axial diaphragmless shock tube, in which cylindrical soap bubbles filled with He, Ne, Air, Ar, Kr, Xe and SF6 were co-axially placed in its test section. Pressure histories at different radii during the shock wave implosion and reflection from the center were measured. Diagnostic method base on double exposure holographic interferometry was applied for the measurement of turbulent mixing zone at the interface. The observed cylindrical interfaces were found to have a higher growth rate of turbulent mixing zone than that of the plane shock / plane interface.
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Seyed Hamid Reza Hosseini: He received his M.Sc. (Eng.) degree in Mechanical Engineering in 1990 from Sharif University of Technology, and his Ph.D. in Aeronautics and Space Engineering in 1999 from Tohoku University. Before starting of his Ph.D. he was lecturer in the School of Mechanical Engineering of Sharif University of Technology. After the Ph.D., he has been postdoctoral researcher supported by the Japan Space Forum, and then he has been promoted to be a research associate of the Shock Wave Research Center, Institute of Fluid Science, Tohoku University. His research interests are shock wave propagation in non-uniform media, shock waves focusing, and recently in medical applications of shock waves.
Toshihiro Ogawa: He received his Electrical High School Diploma in 1991 from Yokote Technical High School. Since then, he has been working as a technician supporting shock wave experiments in the Shock Wave Research Center, Institute of Fluid Science, Tohoku University. He is mainly working for the operation of diaphragmless shock tubes and for the acquisition of holographic interferograms and their evaluation.
Kazuyoshi Takayama: He received his B.Sc. (Eng.) degree in Mechanical Engineering in 1963 from Nagoya Institute of Technology, his M.Sc. (Eng.) degree in 1965 and his Ph.D. in Mechanical Engineering in 1973 from Tohoku University. In 1986, he was promoted to be a Professor of Tohoku University, and in 1988 was appointed to be a director of Shock Wave Research Center, Institute of Fluid Science, Tohoku University. His primary interests were in basic research of shock wave dynamics. He has succeeded intensive use of double exposure holographic interferometry for shock wave research. Results of these shock wave researches have been successfully applied to various fields of science, technology, and industry.
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Hosseini, S.H.R., Ogawa, T. & Takayama, K. Holographic interferometric visualization of the Richtmyer-Meshkov instability induced by cylindrical shock waves. J Vis 2, 371–380 (2000). https://doi.org/10.1007/BF03181452
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DOI: https://doi.org/10.1007/BF03181452