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Density field reconstruction from time-series schlieren images via extended phase-consistent dynamic mode decomposition.
- Source :
-
Experiments in Fluids . Jul2023, Vol. 64 Issue 7, p1-24. 24p. - Publication Year :
- 2023
-
Abstract
- The extended phase-consistent dynamic mode decomposition (DMD) method, which reconstructs density fields from density gradient fields in multiple directions, was developed and applied to schlieren images in the low-density wind tunnel tests. Schlieren images were acquired in the Re = 3000, 10,000, and M = 0.15, 0.50 flows around a triangular airfoil, and the density gradient fields were calculated from the calibration of the optical system. The proposed density field reconstruction method adopts the extended phase-consistent DMD principle for the estimation of the DMD modes of the density field. The density field was reconstructed with good accuracy in a numerical simulation for comparison, and the density fluctuation region caused by vortex shedding around a triangular airfoil was visualized by the experimental data. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 07234864
- Volume :
- 64
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Experiments in Fluids
- Publication Type :
- Academic Journal
- Accession number :
- 169780945
- Full Text :
- https://doi.org/10.1007/s00348-023-03668-x