Non-equilibrium linearized magnetogasdynamic flow over a wavy wall (aligned) (Q1087113)

A steady, linearized flow of a conducting fluid with n non-equilibrium processes in parallel has been considered and neglecting the effects due to viscosity, heat conduction and diffusion and assuming the electrical conductivity to be infinite, a single equation for the flow variables has been derived when the undisturbed uniform magnetic field is aligned to the undisturbed uniform fluid stream. The solution of the equation has been obtained for a flow over a two- dimensional wavy wall. The pressure, net pressure i.e. the difference between the local static pressure and force per unit area arising from the surface current, drag coefficient and total drag coefficient have been calculated and the results have been discussed. It is found that for certain values of the equilibrium Mach number and the magnetic pressure number negative drag coefficient as well as negative total drag coefficient occur in the flow.