NumerEX LLC provides research and development services in computational physics and engineering on contract. The company offers a multiblock boundary-fitted coordinate architecture that makes it possible to simulate a variety of complex geometries and boundary conditions. Physical effects simulated include: MACH2Win, a Windows version of the 2½-dimensional Magnetohydrodynamic (MHD) simulation code, which computes all three components of a magnetic field and velocity and assumes that derivatives of all quantities are zero in the transverse direction, whether in cylindrical or Cartesian symmetry; CGSWin, a Windows version of Los Alamos National Laboratoriesâ CGS code to provide device-independent graphics. CGS pioneered the concept of the metafile, which allows efficient storage and viewing of graphical output from production codes; and Plasma Physics Modeling, including  Plasma Opening Switch simulations delveloped in-house and elsewhere to gain insight in the workings of plasma opening switches, Rail Gun models for the radiatively-driven ablation of wall material allowing the first self-consistent prediction of the total mass of the arc plasma to be made and reveal a convective flow pattern in the arc driven by a transverse density gradient and the arc/projectile acceleration. NumerEx also has experience simulating plasma hall thrusters, including the Russian Stationary Plasma Thruster and the Anode Layer Thruster. These thrusters are candidates for satellite station-keeping because of their high specific impulse, compact size, high payload mass fractions, and long li
