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Integrating chemical kinetic rate equations by selective use of stiff and nonstiff methodsThe effect of switching between nonstiff and stiff methods on the efficiency of algorithms for integrating chemical kinetic rate equations was examined. Different integration methods were tested by application of the packaged code LSODE to four practical combustion kinetics problems. The problems describe adiabatic, and homogeneous gas phase combustion reactions. It is shown that selective use of nonstiff and stiff methods in different regimes of a typical batch combustion problem is faster than the use of either method for the entire problem. The implications which result in the development of fast integration techniques for combustion kinetic rate equations are discussed.
Document ID
19850007417
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Radhakrishnan, K. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 5, 2013
Publication Date
January 1, 1985
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
NAS 1.15:86923
E-2418
NASA-TM-86923
AIAA PAPER 85-0237
Meeting Information
Meeting: Aerospace Sci. Meeting
Location: Reno, NV
Country: United States
Start Date: January 14, 1985
End Date: January 17, 1985
Sponsors: AIAA
Accession Number
85N15726
Funding Number(s)
PROJECT: RTOP 505-32-32
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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