TY - GEN
T1 - DMD-based Superresolution Measurement of a Supersonic Jet using Dual Planar PIV and Acoustic Data
AU - Ozawa, Yuta
AU - Nishikori, Hiroki
AU - Nagata, Takayuki
AU - Nonomura, Taku
AU - Asai, Keisuke
AU - Colonius, Tim
N1 - Funding Information:
The present study was supported by the Japan Society for the Promotion of Science, KAKENHI Grants No. JP21J20744, and the research grants from Shimadzu Science Foundation. Y. Ozawa was supported by the Japan Society for the Promotion of Science, KAKENHI Grants No. JP19H00800. T. Nagata was partially supported by JST CREST Grand No. JPMJCR1763, Japan.
Funding Information:
The present study was supported by the Japan Society for the Promotion of Science, KAKENHI Grants No. JP21J20744, and the research grants from Shimadzu Science Foundation. Y. Ozawa was supported by the Japan Society for the Promotion of Science, KAKENHI Grants No. JP19H00800. T. Nagata was partially supported by JSTCREST Grand No. JPMJCR1763, Japan.
Publisher Copyright:
© 2022, American Institute of Aeronautics and Astronautics Inc, AIAA., All rights reserved.
PY - 2022
Y1 - 2022
N2 - The present study proposes a framework of the superresolution measurement based on the dynamic mode decomposition (DMD) with the Kalman filter and Rauch–Tung–Striebel smoother. The dual-planar particle image velocimetry (PIV) systems were constructed to acquire the paired velocity fields of a Mach 1.1 supersonic jet. The acoustic measurement was simultaneously performed, and the velocity and acoustic data are used for the superresolution. Although the dual PIV system measures the basic characteristics of the velocity fields, all the DMD modes calculated by the exact DMD are decay modes due to the measurement noise. The superresolved velocity field shows smooth convection of the large-scale structures at the downstream side. Therefore, the proposed method is effective to reconstruct the entire flow fluctuation because the DMD modes express the linear dynamical system of the velocity fields.
AB - The present study proposes a framework of the superresolution measurement based on the dynamic mode decomposition (DMD) with the Kalman filter and Rauch–Tung–Striebel smoother. The dual-planar particle image velocimetry (PIV) systems were constructed to acquire the paired velocity fields of a Mach 1.1 supersonic jet. The acoustic measurement was simultaneously performed, and the velocity and acoustic data are used for the superresolution. Although the dual PIV system measures the basic characteristics of the velocity fields, all the DMD modes calculated by the exact DMD are decay modes due to the measurement noise. The superresolved velocity field shows smooth convection of the large-scale structures at the downstream side. Therefore, the proposed method is effective to reconstruct the entire flow fluctuation because the DMD modes express the linear dynamical system of the velocity fields.
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U2 - 10.2514/6.2022-3065
DO - 10.2514/6.2022-3065
M3 - Conference contribution
AN - SCOPUS:85135036132
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 -