TY - GEN
T1 - Experimental investigation of unsteady shock oscillation by a forward-facing hemisphere at mach 3
AU - Mizukaki, Toshiharu
AU - Hatanaka, Kazuaki
AU - Saito, Tsutomu
AU - Yamada, Kazuhiko
N1 - Publisher Copyright:
© 2016, American Institute of Aeronautics and Astronautics Inc, AIAA, All rights reserved.
PY - 2016
Y1 - 2016
N2 - Experimental and numerical investigation has been made to reveal the characteristic of shock wave pulsation in front of a hemi-spherical model at supersonic speeds more above Mach 2. Three types of measurements by; high-speed schlieren, pressure transducers, and pressure-sensitive paint, were employed to make the relation between shock pulsation and pressure distribution on the inner surface of the model clear. Three-dimensional numerical analysis has also been carried out on the flow field around the model by using compressible fluid analysis code FaSTAR, which was developed by JAXA. Comparison between the experimental results and the numerical one summarized that the shock wave pulsation with about 800 Hz was initiated by the small disturbances generated by the bow shock in front of the model and developed inside it. The development of the small disturbances depends on the geometric configuration of the rip of the model. A new geometrical configuration of supersonic parachute for planetary probes would be proposed to suppress shock pulsation at decent phase into the planet atmosphere.
AB - Experimental and numerical investigation has been made to reveal the characteristic of shock wave pulsation in front of a hemi-spherical model at supersonic speeds more above Mach 2. Three types of measurements by; high-speed schlieren, pressure transducers, and pressure-sensitive paint, were employed to make the relation between shock pulsation and pressure distribution on the inner surface of the model clear. Three-dimensional numerical analysis has also been carried out on the flow field around the model by using compressible fluid analysis code FaSTAR, which was developed by JAXA. Comparison between the experimental results and the numerical one summarized that the shock wave pulsation with about 800 Hz was initiated by the small disturbances generated by the bow shock in front of the model and developed inside it. The development of the small disturbances depends on the geometric configuration of the rip of the model. A new geometrical configuration of supersonic parachute for planetary probes would be proposed to suppress shock pulsation at decent phase into the planet atmosphere.
UR - http://www.scopus.com/inward/record.url?scp=85007602683&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85007602683&partnerID=8YFLogxK
U2 - 10.2514/6.2016-1767
DO - 10.2514/6.2016-1767
M3 - Conference contribution
AN - SCOPUS:85007602683
SN - 9781624103933
T3 - 54th AIAA Aerospace Sciences Meeting
BT - 54th AIAA Aerospace Sciences Meeting
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - 54th AIAA Aerospace Sciences Meeting, 2016
Y2 - 4 January 2016 through 8 January 2016
ER -