The hypersonic flow fields around a 1200 apex angle blunt cone fitted with spikes have been visualized using electric discharge technique at Mach 5.75 in a hypersonic shock tunnel. The blunt cone has been fitted with a flat tipped spike and a flat aerodisc tipped spike assembly. The length of the aerodisc tipped spike assembly has been kept equal to the model base diameter (L/D=1) and the length of the flat tipped spike has been kept at 12mm. The flow field pictures reveal all the salient features of the flow fields around the spiked bodies. Numerical simulations carried out to complement the experiments agree well with the experimental pictures.
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Viren Menezes: He received his B.E. (Eng.) degree in Mechanical Engineering in 1994 and M.Tech. degree in Industrial Pollution Control Engineering in 1996 from Mangalore University, India. After obtaining M.Tech degree he worked as an assistant manager in an engineering firm till 1999. He received his Ph.D. degree in Aerospace Engineering in 2003 from Indian Institute of Science, Bangalore, India. Currently he is working as a JSPS post-doctoral fellow at the Institute of Fluid Science, Tohoku University, Sendai, Japan. His research interests include hypersonic aerodynamics, measurement and flow visualization techniques for shock/wind tunnels, high-speed unsteady flows and medical applications of shock waves.
Gopalan Jagadeesh: He received his B.E. (Eng.) degree in Mechanical Engineering in 1989 from Bangalore University, India, M.E. (Heat Power Eng.) degree in 1992 from Birla Institute of Technology, Mesra, Ranchi, India, and Ph.D. degree in Aerospace Engineering in 1998 from Indian Institute of Science, Bangalore, India. After receiving Ph.D. degree he worked as a visiting lecturer at the Shock Wave Research Center, Tohoku University, Sendai, Japan before taking up his current position as an assistant professor in the Department of Aerospace Engineering, Indian Institute of Science, Bangalore, India. His research interests include hypersonic aerothermodynamics and industrial & biological applications of shock waves.
K. P. JagannathaReddy: He received his B.Sc. degree in 1973 and M.Sc. degree in Physics in 1975 from Mysore University, India, and Ph.D. degree in Laser Technology in 1981 from Birla Institute of Technology, Ranchi, India. In 2002, he was promoted as a professor of Aerospace Engineering Department at Indian Institute of Science, Bangalore, India. His research interests include quantum electronics, optoelectronics, hypersonic aerodynamics, gasdynamic lasers and applications of lasers.
Mingyu Sun: He received his B.Sc. degree in 1993 and M.Eng. degree in 1995 from the Department of Mechanics, University of Science and Technology, China, and Ph.D. degree in Aeronautics and Space Engineering in 1998 from Tohoku University, Sendai, Japan. After obtaining Ph.D. degree he worked as a research associate at the Shock Wave Research Center at Institute of Fluid Science, Tohoku University. In 2004, he has been promoted as an associate professor of Institute of Fluid Science at Tohoku University. His primary research interest is basic wave phenomenon. He has developed a solution-adaptive code using unstructured quadrilaterals, which accurately and efficiently captures propagation and interaction of shock waves.
Kazuyoshi Takayama: He received his B.Sc. (Eng.) degree in Mechanical Engineering in 1963 from Nagoya Institute of Technology, Japan, his M.Sc (Eng.) degree in 1965 and Ph.D. degree in 1973 in Mechanical Engineering from Tohoku University, Sendai, Japan. In 1986, he was promoted as a professor of Tohoku University, and in 1988 he became the director of the Shock Wave Research Center at Institute of Fluid Science, Tohoku University. His primary interests are in the basic research of shock wave dynamics. He has intensively studied double exposure holographic interferometry for use in shock wave research. The results of his shock wave research have been successfully applied to various fields of science, technology and industry.
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Viren, M., Jagadeesh, G., Reddy, K.P.J. et al. Visualization of shock waves around hypersonic spiked blunt cones using electric discharge. J Vis 8, 65–72 (2005). https://doi.org/10.1007/BF03181604
- Electric discharge
- Spiked blunt cone
- Hypersonic shock tunnel