Non-equilibrium ionized flow simulations over different shapes of bodies within electro-magnetic fields

Abstract

This paper investigates the flight configurations that attenuate the adverse effect of drag growth from the perspective of vehicle geometry and magnetic field layout when magnetohydrodynamic (MHD) flow control is applied to the cruise flight of hypersonic vehicles. The high-temperature real gas effects involved in hypersonic flow are modeled using Park’s 7 species chemical reaction model and two-temperature model. Two dimensional Navier-Stocks (NS) equations with MHD terms are solved using the central-upwind scheme of Kurganov with second-order accuracy. Drag and heat flux characteristics of different geometries under MHD control are obtained for RAM-C II flight conditions. The effect of magnetic field layouts on MHD control is analyzed. The shape of cone-cylinder with high magnetic field utilization and magnetic field layout with high magnetic field intensity on either side of the stagnation point are more suitable for applying MHD flow control to hypersonic cruise, which ensure maximum aerodynamic drag reduction and optimal thermal protection effect under the dipole-like magnetic field.

Keywords

MHD flow control thermal protection drag reduction

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