Numerical simulation of the body of revolution hypersonic object cruise in near space

When the hypersonic vehicle is cruise in the near space, it will produce a plasma sheath with inhomogeneous material properties aroundthe vehicle. The Electromagnetic waves will be blocked or attenuated, which leads to communications blackout. Compared with experiments, numerical simulation is much efficient, time saving, and low cost. In this contribution, we propose an efficient multiphysics analysis framework of the rotationally symmetric hypersonic cruise object. The computational fluid dynamics tool is first employed to the complex dielectric constant of plasma sheath, when the flight height and speed are determined. When the hypersonic cruise object is flight with a null attack angle, the plasma sheath is also axial symmetry. As a result, it can be simulated with an efficient body of revolution method of moments (BoR). The number of unknowns can be defined on a surface that is generated by rotating a planar curve about the axis of symmetry, which reduces the 3D volume discretization unknowns into 2D case. Numerical simulations compared with finite-difference time-domain (FDTD) and volume surface integral equation (VSIE) show the proposed method is much more efficient than the volume surface integral equation.