Numerical Study of a MHD-Heat Shield

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/83604/1/AIAA-2010-4487-138.pd

The Symmetries of Fermion Fluids at Low Dimensions

We point out that the quasiparticle spectrum of the Landau Fermi liquid theory has an extra $Z_2$ symmetry, local in momentum space, which is not generic to the Hamiltonian with interactions. Thus the Fermi liquid is in this sense a (quantum) zero-temperature critical point.Comment: submitted to a volume honoring Quin Luttinge

Numerical Study of Energy Deposition Requirements for Aerodynamic Control of Hypersonic Vehicles

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76466/1/AIAA-2008-1109-933.pd

Modeling low pressure collisional plasma sheath with space-charge effect

The present work develops a computationally efficient one-dimensional subgrid embedded finite element formulation for plasma-sheath dynamics. The model incorporates space-charge effect throughout the whole plasma and the sheath region using multifluid equations. Secondary electron emission is not considered. A third-order temperature dependent polynomial is used to self-consistently calculate the rate of ionization in the plasma dynamic equations. The applications include dc and rf sheath inside a glow discharge tube where the noble gas is immobile, and a partially ionized plasma sheath inside an electric propulsion thruster channel in which the gas flows. The electron and ion number densities of the numerical solution decrease in the sheath region as expected. The ion velocity and electron temperature profiles also exhibit the expected behavior. The computed sheath potential compares well with the available experimental data. © 2003 American Institute of Physics.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/69919/2/PHPAEN-10-6-2578-1.pd

Numerical Study of Magnetoaerodynamic Flow Around a Hemisphere

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/83560/1/AIAA-49278-455.pd