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Numerical techniques for solving nonlinear instability problems in smokeless tactical solid rocket motorsThe selection of a satisfactory numerical method for calculating the propagation of steep fronted shock life waveforms in a solid rocket motor combustion chamber is discussed. A number of different numerical schemes were evaluated by comparing the results obtained for three problems: the shock tube problems; the linear wave equation, and nonlinear wave propagation in a closed tube. The most promising method--a combination of the Lax-Wendroff, Hybrid and Artificial Compression techniques, was incorporated into an existing nonlinear instability program. The capability of the modified program to treat steep fronted wave instabilities in low smoke tactical motors was verified by solving a number of motor test cases with disturbance amplitudes as high as 80% of the mean pressure.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Baum, J. D.
(Paris-Sud Univ. Orsay, France)
Levine, J. N.
Date Acquired
August 11, 2013
Publication Date
November 1, 1980
Publication Information
Publication: NASA. Langley Research Center The 17th JANNAF Combust. Meeting, Vol. 1
Subject Category
Propellants And Fuels
Accession Number
Funding Number(s)
CONTRACT_GRANT: F04611-77-C-0042
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