A numerical study is performed to investigate unsteady, two-dimensional, incompressible laminar flow over both sides of a slot-perforated flat surface, which is placed in a narrow channel. Emphasis is placed on the effect of the blockage factor, that is, the ratio of plate thickness to channel widthW on the heat-transfer performance and the velocity and thermal fields. It is found from the stud...

Singular perturbation problems with turning points arise as mathematical models for various physical phenomena. The problem with interior turning point represent one-dimensional version of stationary convectiondiffusion problems with a dominant convective term and a speed field that changes its sign in the catch basin. Boundary turning point problems, on the other hand, arise in geophysics and ...