Three Dimensional Flows of Some Non- Newtonian Fluids with Periodic Suction

Abstract

Over the last century lots of efforts have been put in the reduction of profile drag. Boundary layer suction is one of the effective methods to achieve this goal. A laminar boundary layer will be stabilized preventing transition from laminar boundary layer to a turbulent one and yielding larger areas of laminar flow, which generates less drag. In this thesis, mathematical models for incompressible laminar steady flows of three different non-Newtonian models with/without magnetohydrodynamic effect are developed. It is analyzed theoretically and found that much improvement can be achieved by implementing boundary layer suction. Moreover, slip at wall/presence of magnetic field applied normal to main flow velocity further reduces the drag.