TY - GEN
T1 - Comparison of time-averaged supersonic jet profile acquired by particle image velocimetry and shadowgraph velocimetry using single pixel ensemble correlation
AU - Ozawa, Yuta
AU - Nonomura, Taku
AU - Asai, Keisuke
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant Number 25709009, 17H03473.
Publisher Copyright:
© 2019 by Yuta Ozawa, Taku Nonomura, Keisuke Asai. Published by the American Institute of Aeronautics and Astronautics, Inc.
PY - 2019
Y1 - 2019
N2 - The particle image velocimetry (PIV) measurement and shadowgraph velocimetry of the supersonic jet was conducted to investigate the convective velocity of the large scale structure in the shear layer. The Mach number was 2.0, the Reynolds number based on the diameter of the nozzle exit was 1.0×106. The single pixel ensemble correlation method (Westerweel et al., 2003) was applied to the PIV and shadowgraph images to obtain averaged velocity field with fine spatial resolution. The axial velocity calculated from shadowgraph image is about 0.7 times that of PIV. The velocity calculated from shadowgraph image is in good agreement with the estimated velocity which is calculated from screech frequency and the shock cell length by the Powell’s model.
AB - The particle image velocimetry (PIV) measurement and shadowgraph velocimetry of the supersonic jet was conducted to investigate the convective velocity of the large scale structure in the shear layer. The Mach number was 2.0, the Reynolds number based on the diameter of the nozzle exit was 1.0×106. The single pixel ensemble correlation method (Westerweel et al., 2003) was applied to the PIV and shadowgraph images to obtain averaged velocity field with fine spatial resolution. The axial velocity calculated from shadowgraph image is about 0.7 times that of PIV. The velocity calculated from shadowgraph image is in good agreement with the estimated velocity which is calculated from screech frequency and the shock cell length by the Powell’s model.
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U2 - 10.2514/6.2019-0322
DO - 10.2514/6.2019-0322
M3 - Conference contribution
AN - SCOPUS:85083944433
SN - 9781624105784
T3 - AIAA Scitech 2019 Forum
BT - AIAA Scitech 2019 Forum
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Scitech Forum, 2019
Y2 - 7 January 2019 through 11 January 2019
ER -