Finite Larmor Radius Hydromagnetic Flow past an Obstacle

Abstract

Effects of dispersion due to the finite Larmor radius on the steady flow of a collisionless plasma past a thin symmetrical semi-infinite wedge are considered on the basis of the modified Chew-Goldberger-Low theory. The flow field near the tip is given by the numerical integration of the Fourier transform. The asymptotic behaviour of the flow field at a far distance from the wedge is estimated by using the method of stationary phase or Laplace’s method. It is shown that the flow field is subject to remarkable variety of dispersion effect according to the main flow conditions.