A decoupled implicit method for aerothermodynamics and reacting flows

Graham V Candler, Pramod K. Subbareddy, Ioannis Nompelis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

We propose a new implicit computational fluid dynamics method for steady-state compressible reacting flows. The concept is to decouple the total mass, momentum, and energy conservation equations from the species mass and internal energy equations, and to solve the two equation sets sequentially. With certain approximations to the implicit system, it is possible to dramatically reduce the cost of the solution with little to no penalty on convergence properties. Importantly, the cost of the decoupled implicit problem scales linearly with the number of species, as opposed to the quadratic scaling for the conventional fully-coupled method. Furthermore, the new approach reduces the memory requirements by a significant factor. The decoupled implicit method shows promise for application to aerothermodynamics problems and reacting flows.

Original languageEnglish (US)
Title of host publication18th AIAA/3AF International Space Planes and Hypersonic Systems and Technologies Conference 2012
StatePublished - Dec 1 2012
Event18th AIAA/3AF International Space Planes and Hypersonic Systems and Technologies Conference 2012 - Tours, France
Duration: Sep 24 2012Sep 28 2012

Other

Other18th AIAA/3AF International Space Planes and Hypersonic Systems and Technologies Conference 2012
CountryFrance
CityTours
Period9/24/129/28/12

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