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Detailed Comparison of DNS to PSE for Oblique Breakdown at Mach 3A pair of oblique waves at low amplitudes is introduced in a supersonic flat-plate boundary layer. Their downstream development and the concomitant process of laminar to turbulent transition is then investigated numerically using Direct Numerical Simulations (DNS) and Parabolized Stability Equations (PSE). This abstract is the last part of an extensive study of the complete transition process initiated by oblique breakdown at Mach 3. In contrast to the previous simulations, the symmetry condition in the spanwise direction is removed for the simulation presented in this abstract. By removing the symmetry condition, we are able to confirm that the flow is indeed symmetric over the entire computational domain. Asymmetric modes grow in the streamwise direction but reach only small amplitude values at the outflow. Furthermore, this abstract discusses new time-averaged data from our previous simulation CASE 3 and compares PSE data obtained from NASA's LASTRAC code to DNS results.
Document ID
20100024514
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Mayer, Christian S. J. (Arizona Univ. Tucson, AZ, United States)
Fasel, Hermann F. (Arizona Univ. Tucson, AZ, United States)
Choudhari, Meelan (NASA Langley Research Center Hampton, VA, United States)
Chang, Chau-Lyan (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 24, 2013
Publication Date
June 28, 2010
Subject Category
Aerodynamics
Report/Patent Number
NF1676L-9738
Meeting Information
Meeting: 40th AIAA Fluid Dynamics Conference and Exhibit
Location: Chicago, IL
Country: United States
Start Date: June 28, 2010
End Date: July 1, 2010
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
WBS: WBS 561581.02.08.07.18.03
CONTRACT_GRANT: FA9550-08-1-0211
Distribution Limits
Public
Copyright
Public Use Permitted.

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