STABILITY OF PARALLEL, QUASI-PARALLEL AND STATIONARY FLOWS.

Stability studies were conducted for boundary layers along concave heated walls, with and without suction; wall jets along concave and convex walls; stationary layers of fluid and natural convection flow along inclined plates. The results indicated that the normal velocity component of the mean flow in a boundary layer, although much smaller than the streamwise component had a profound effect in reducing the stability of the flow. On the other hand, suction at the wall improved the stability characteristics. For the flow of parallel layers of fluid along heated walls with small curvature, a unique stability curve was obtained.