Abstract: Influences of the magnetic field configuration on theheat flux density distribution along a ballistic reentry vehicle surfacewere numerically investigated with the low magnetic Reynolds numberapproximation of MHD (Magnetohydrodynamics) model. The numerical resultsshow the distinct difference of the effects on the heat flux densitydistribution of the two magnetic dipoles with the same magnitude anddifferent orientations, indicating the efficiency problem in heat fluxmanagement by utilizing MHD method. Due to the influences of the magneticdipoles on the energy conversion mechanism of the flow, the principles ofthe magnetic field configuration in heat flux mitigation are developed.