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Comparison of spatial numerical operators for duct-nozzle acousticsA production Navier-Stokes/Euler CFD code, NASTD, developed for aircraft flowfield analysis has been modified to analyze acoustic fields associated with propulsion exhaust systems. The modified code has been applied to the Category 5 nozzle problem using six different spatial discretization schemes combined with a third-order, compact storage Runge-Kutta time integration. NASTD was found capable of tracking pressure disturbances normalized by the freestream value of order 10(exp -6), even with lower-order schemes, for the benchmark problem.
Document ID
19950023737
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Cain, A. B. (McDonnell-Douglas Corp. Saint Louis, MO, United States)
Bower, W. W. (McDonnell-Douglas Corp. Saint Louis, MO, United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1995
Publication Information
Publication: NASA. Langley Research Center, ICASE(LaRC Workshop on Benchmark Problems in Computational Aeroacoustics (CAA) p 273-278 (SEE N95-30133 10-71)
Subject Category
Acoustics
Accession Number
95N30158
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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