Post on 16-May-2018
transcript
N95- 23637
Methodology for
of National Launch SystemNozzle Manifold
CFD Design Analysis
/
I: / j
Scot L. Haire
Pratt & Whitney, West Palm Beach, FL
ABSTRACT
The current design environment dictates that high technology CFD
(Computational Fluid Dynamics) analysis produce quality results in a
timely manner if it is to be integrated into the design process. The
design methodology outlined describes the CFD analysis of an NLS (Na-
tional Launch System) nozzle film cooling manifold. The objective of
tile analysis was to obtain a qualitative estimate for the flow distribution
within the manifold. A complex, 3D, multiple zone, structured grid was
generated from a 3D CAD file of the geometry. An Euler solution was
computed with a fully implicit compressible flow solver. Post processing
consisted of full 3D color graphics and mass averaged performance. The
result was a qualitative CFD solution that provided the design team with
relevant information concerning the flow distribution in and performance
characteristics of the film cooling manifold within an effective time frame.
Also, this design methodology was the foundation for a quick turnaround
CFD analysis of the next iteration in the manifold design.
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