TY - GEN

T1 - Computational simulation of magnetohydrodynamics acceleration experiments using newton-krylov-schwarz method

AU - Wan, Tian

AU - Suzuki, Ryuta

AU - Candler, Graham V.

PY - 2007/7/2

Y1 - 2007/7/2

N2 - A three-dimensional MHD solver is described in the paper. The solver simulates reacting flows with nonequilibrium between translational-rotational, vibrational and electron translational modes. Also included are models for electrical conductivity, electron thermal conductivity and collision frequencies. The conservation equations are discretized with implicit time marching and the second-order Steger-Warming scheme, and the resulted linear system is solved iteratively with Newton-Krylov-Schwarz method that is implemented by PETSc package. The results of convergence tests are plotted, which show scalability when adequate number of processors are used. Then eleven 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.

AB - A three-dimensional MHD solver is described in the paper. The solver simulates reacting flows with nonequilibrium between translational-rotational, vibrational and electron translational modes. Also included are models for electrical conductivity, electron thermal conductivity and collision frequencies. The conservation equations are discretized with implicit time marching and the second-order Steger-Warming scheme, and the resulted linear system is solved iteratively with Newton-Krylov-Schwarz method that is implemented by PETSc package. The results of convergence tests are plotted, which show scalability when adequate number of processors are used. Then eleven 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.

UR - http://www.scopus.com/inward/record.url?scp=34250888774&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34250888774&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:34250888774

SN - 1563478900

SN - 9781563478901

T3 - Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting

SP - 4756

EP - 4769

BT - Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting

T2 - 45th AIAA Aerospace Sciences Meeting 2007

Y2 - 8 January 2007 through 11 January 2007

ER -