Effects of free‐stream velocity and pressure gradients on MHD boundary‐layer control

摘要

A steady two‐dimensional MHD boundary‐layer flow on a flat plate with varying hydrostatic pressure and free‐stream velocity along the plate and a uniform transpiration through the plate is considered. The momentum boundary‐layer thickness is found to increase substantially with injection and negative flow‐shape factors. However, it decreases with increasing magnetic interaction numbers. Transpiration, flow‐shape factor, as well as magnetic interaction number strongly affect the shearing stress at the wall. Injection and retarding free‐stream velocity will enhance the chances of a flow separation, while the magnetic interation number will do just the opposite.