TY - GEN
T1 - A decoupled implicit method for aerothermodynamics and reacting flows
AU - Candler, Graham V.
AU - Subbareddy, Pramod K
AU - Nompelis, Ioannis
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85088340915&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85088340915&partnerID=8YFLogxK
U2 - 10.2514/6.2012-5917
DO - 10.2514/6.2012-5917
M3 - Conference contribution
AN - SCOPUS:85088340915
SN - 9781600869310
T3 - 18th AIAA/3AF International Space Planes and Hypersonic Systems and Technologies Conference 2012
BT - 18th AIAA/3AF International Space Planes and Hypersonic Systems and Technologies Conference 2012
PB - American Institute of Aeronautics and Astronautics Inc.
T2 - 18th AIAA/3AF International Space Planes and Hypersonic Systems and Technologies Conference 2012
Y2 - 24 September 2012 through 28 September 2012
ER -