Numerical Study of Magnetoaerodynamic Flow Around a Hemisphere

摘要

Newly developed computational tools are used to compute hypersonic flowaround a hemisphere cylinder that usesna magnet located within the body as a means of heat flux mitigation. These tools include an improved electricalnconductivity model and a parallelized three-dimensional magnetohydrodynamic module that is loosely coupled to anthree-dimensional fluid code. Several electrical conductivity models are explored for a range of magnetic fieldnstrengths. Results show the shock standoff distance increases when the magnetic field is applied, but the distance isnhighly dependent on the conductivitymodel selected. The increase in shock standoff distance reduces the gradients innthe shock layer, thereby reducing the peak heat flux to the body.However, the total heat flux slightly increases due tonadditional heating to the aft section of the geometry.