EFFECT OF MAGNETIC-FIELD ON THE STRUCTURE OF HIGH-SPEED FLOWS

The eight-wave ideal magnetohydrodynamics (MHD) equations are extended to two dimensions and applied to a blunt two-dimensional body at hype rsonic speeds. Several developments are reported on. 1) The two-dimens ional governing equations of ideal MHD equations are derived in the ge neralized coordinate system. 2) A set of eigenvectors associated with the system of equations is developed for the implementation of the num erical scheme. 3) A solution is obtained for a blunt two dimensional b ody at hypersonic speed. 4) The effect of the magnetic field on the fl owfield structure is investigated. When the external magnetic field is activated, the solution indicates an increase in shock standoff dista nce and a corresponding decrease in total pressure. Furthermore, a con tact discontinuity around the nose region is generated, and the flow l oses symmetricity along the body axis. The numerical scheme used is th e modified Runge-Kutta scheme with the total variation diminishing mod el augmented as a postprocessor approach at each time level.