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Journal of Flow Visualization and Image Processing
SJR: 0.11 SNIP: 0.312 CiteScore™: 0.1

ISSN Imprimir: 1065-3090
ISSN En Línea: 1940-4336

Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.v4.i3.40
pages 223-230

FLOW VISUALIZATION OF A BALLISTIC RANGE BY COLOR SCHLIEREN METHODS

M. Kameda
Department of Mechanical Systems Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184, Japan
Hiroyuki Abe
Computational Science Research Group, Japan Aerospace Exploration Agency
H. Chinju
Department of Mechanical Systems Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184, Japan
M. Konno
Department of Mechanical Systems Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184, Japan
Yoshimi Watanabe
Department of Engineering Physics, Electronics and Mechanics, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
F. Higashino
Department of Mechanical Systems Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184, Japan

SINOPSIS

A vertical ballistic range is constructed to investigate sonic boom properties. The flow field around a launched projectile in the range is visualized by both one- and two-dimensional color schlieren methods. The flight Mach number of the projectile is lower than 1.5. The flow visualization shows that some disturbances, such as blast waves, vortex rings, and jets, are generated when the projectile is launched. The blast waves have strong influences on the flow field around the projectile because the propagation velocity of the blast waves is close to the velocity of the projectile. Setting a few baffle plates at the exit of the barrel effectively reduces the strength of the disturbances. The present color schlieren method extended to two-dimensional analysis is an effective one to visualize a complicated supersonic flow field like the present experiment.