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Parallel Fully-Implicit Computation of Magnetohydrodynamics Acceleration Experiments
Wan T(万田); Candler G; Wan T
Source PublicationISCM II AND EPMESC XII, PTS 1 AND 2
Conference Name2nd International Symposium on Computational Mechanics
Conference DateNOV 30-DEC 03, 2009
Conference PlaceHong Kong, PEOPLES R CHINA
AbstractA three-dimensional MHD solver is described in the paper. The solver simulates reacting flows with nonequilibrium between translational-rotational, vibrational and electron translational modes. The conservation equations are discretized with implicit time marching and the second-order modified Steger-Warming scheme, and the resulted linear system is solved iteratively with Newton-Krylov-Schwarz method that is implemented by PETS,: package. The results of convergence tests arc plotted, which show good scalability and convergence around twice faster when compared with the DPLR method. Then five test runs are conducted simulating the experiments done at the NASA Ames MHD channel, and the calculated pressures, temperatures, electrical conductivity, back EMF, load factors and flow accelerations are shown to agree with the experimental data. Our computation shows that the electrical conductivity distribution is not uniform in the powered section of the MHD channel, and that it is important to include Joule heating in order to calculate the correct conductivity and the MHD acceleration.
KeywordElectron-temperature Joule Heating Fully-implicit Method
Indexed ByCPCI(ISTP)
Document Type会议论文
Corresponding AuthorWan T
Recommended Citation
GB/T 7714
Wan T,Candler G,Wan T. Parallel Fully-Implicit Computation of Magnetohydrodynamics Acceleration Experiments[C]ISCM II AND EPMESC XII, PTS 1 AND 2,2010:1553-1558.
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