TY - GEN
T1 - Time-Resolved Three-Dimensional Velocity Fields of Supersonic Jet using PIV and Near-Field Acoustic Data based on POD
AU - Lee, Chungil
AU - Nishikori, Hiroki
AU - Nagata, Takayuki
AU - Ozawa, Yuta
AU - Nonomura, Taku
AU - Asai, Keisuke
N1 - Funding Information:
The present study was supported by the Japan Society for the Promotion of Science, KAKENHI Grants No.JP21J20744, and . Y, Ozawa was supported by the Japan Society for the Promotion of Science, KAKENHI Grants No. 19H00800. T, Nagata was partially supported by JSTm CREST Grand Number JPMJCR1763, Japan.
Funding Information:
The present study was supported by the Japan Society for the Promotion of Science, KAKENHI Grants No.JP21J20744, and . Y, Ozawa was supported by the Japan Society for the Promotion of Science, KAKENHI Grants No. 19H00800. T, Nagata was partially supported by JSTmCREST Grand Number JPMJCR1763, Japan.
Publisher Copyright:
© 2022, American Institute of Aeronautics and Astronautics Inc, AIAA., All rights reserved.
PY - 2022
Y1 - 2022
N2 - The method for estimating time-resolved three-dimensional velocity field is developed to investigate the high spatial and temporal flow structures of the supersonic jet with the Mach number of 1.35. The supersonic jet were measured by non-time-resolved particle image velocimetry (PIV) measurement and time-resolved near-field acoustic measurement. The multi-time-delay modified linear stochastic estimation (MTD-mLSE) was applied into the reduced-order velocity data and the Fourier coefficient acoustic data which is decomposed by the complex Fourier expansion series. The four azimuhal modes were reconstructed from the developed method. The azimuthal mode 0 is the axisymmetric mode, the azimuthal mode 1 and 3 are helical mode and the azimuthal mode 2 is the helical and the lateral modes. The dominant azimuthal mode of the Mach number of 1.35 can be identified from time-resolved three-dimensional velocity fields which are the sum of the mean and the fluctuations components.
AB - The method for estimating time-resolved three-dimensional velocity field is developed to investigate the high spatial and temporal flow structures of the supersonic jet with the Mach number of 1.35. The supersonic jet were measured by non-time-resolved particle image velocimetry (PIV) measurement and time-resolved near-field acoustic measurement. The multi-time-delay modified linear stochastic estimation (MTD-mLSE) was applied into the reduced-order velocity data and the Fourier coefficient acoustic data which is decomposed by the complex Fourier expansion series. The four azimuhal modes were reconstructed from the developed method. The azimuthal mode 0 is the axisymmetric mode, the azimuthal mode 1 and 3 are helical mode and the azimuthal mode 2 is the helical and the lateral modes. The dominant azimuthal mode of the Mach number of 1.35 can be identified from time-resolved three-dimensional velocity fields which are the sum of the mean and the fluctuations components.
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U2 - 10.2514/6.2022-3024
DO - 10.2514/6.2022-3024
M3 - Conference contribution
AN - SCOPUS:85135093641
SN - 9781624106644
T3 - 28th AIAA/CEAS Aeroacoustics Conference, 2022
BT - 28th AIAA/CEAS Aeroacoustics Conference, 2022
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - 28th AIAA/CEAS Aeroacoustics Conference, 2022
Y2 - 14 June 2022 through 17 June 2022
ER -