Chaganti, Narendra S and Brooker, Brian T and Olcmen, Semih M and Kolhe, Pankaj
(2018)
Study of shock wave boundary layer interaction using modal decomposition.
In: 2018 AIAA Aerospace Sciences Meeting, 8–12 January 2018, Kissimmee, Florida.
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Abstract
Snapshot Proper Orthogonal Decomposition (SPOD) and Dynamic Mode Decomposition (DMD) have been
used
to study the flow features of oblique S
hockwave
Boundary Layer Interaction (
SWBLI). Ra
inbow Schlieren
Deflectometry (RSD) has been used to capture the flow data at 30,000 frames per second. The experimental
setup produces a free stream flow of Mach 3.1. A 12° isosceles triangular prism attached to the roof of the test
section generates the
required oblique shock in the test section. The RSD pictures were used for data analysis
to determine the transverse ray deflections at each pixel of the pictures. The analysis focuses on obtaining
dominant flow regions in the flow and the corresponding mo
des at which they occur. This modal information
is used to comment on the unsteadiness associated with the flow
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