Asymptotic stability of linearly evolving non-stationary modes in a uniform hydromagnetic field over a rotating-disk flow with suction and injection

摘要

In this paper the linear stability properties of the magnetohydro-dynamic flow of an incompressible, viscous and electrically conducting fluid are investigated for the boundary- layer due to an infinite permeable rotating-disk. The fluid is subjected to an external magnetic field perpendicular to the disk. The interest lies also in finding out the effects of uniform suction or injection. In place of the traditional linear stability method, a theoretical approach is adopted here based on the high-Reynolds-number triple-deck theory. It is demonstrated that the non-stationary perturbations evolve in accordance with an eigenrelation analytically obtained.