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An Application of Overset Grids to Payload/Fairing Three-Dimensional Internal Flow CFD AnalysisThe application of overset grids to the computational fluid dynamics analysis of three-dimensional internal flow in the payload/fairing of an expendable launch vehicle is described. In conjunction with the overset grid system, the flowfield in the payload/fairing configuration is obtained with the aid of OVERFLOW Navier-Stokes code. The solution exhibits a highly three dimensional complex flowfield with swirl, separation, and vortices. Some of the computed flow features are compared with the measured Laser-Doppler Velocimetry (LDV) data on a 1/5th scale model of the payload/fairing configuration. The counter-rotating vortex structures and the location of the saddle point predicted by the CFD analysis are in general agreement with the LDV data. Comparisons of the computed (CFD) velocity profiles on horizontal and vertical lines in the LDV measurement plane in the faring nose region show reasonable agreement with the LDV data.
Document ID
20130010429
Acquisition Source
Kennedy Space Center
Document Type
Preprint (Draft being sent to journal)
Authors
Kandula, Max (ASRC Aerospace Corp. Cocoa Beach, FL, United States)
Nallasamy, R. (ASRC Aerospace Corp. Cocoa Beach, FL, United States)
Schallhorn, P. (NASA Kennedy Space Center Cocoa Beach, FL, United States)
Duncil, L. (NASA Kennedy Space Center Cocoa Beach, FL, United States)
Date Acquired
August 27, 2013
Publication Date
January 1, 2007
Subject Category
Aerodynamics
Report/Patent Number
KSC-2007-215
Funding Number(s)
CONTRACT_GRANT: NAS10-03006
Distribution Limits
Public
Copyright
Public Use Permitted.

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