![]() ![]() This demonstrates the de-correlation effect of turbulence and its contribution to edge transport. Concomitant reduction of the coherence between electron density and poloidal electric field fluctuations and the change of their cross-phase resulted in turbulent particle flux dropping by more than a half at the plasma edge. As a consequence, the edge profiles of electron density were steepened, and both the absolute and relative fluctuation levels were suppressed by the shearing E x B flows. A strong shear layer of radial electric field was produced in the plasma edge region, which resulted in the formation of an edge transport barrier. The phenomena of improved edge confinement due to ion cyclotron radio frequency boronization were observed with a fast reciprocating Langmuir probe in the HT-7 tokamak. However, in the case of existing surface blowing, the shear force initially increases with tangential velocity and the biggest shear force occurs at the interior of the boundary layer, the skin friction approaches to zero as the blowing rate approaches the critical value. In the case of existing suction, the shear force decreases with the increases of tangential velocity, the largest shear force occurs at wall and the smallest shear force occurs at the edge of the boundary layer. The skin friction decreases with the increase of the parameters of power law and blowing. It is shown that the solution of the boundary layer problem depends not only on the ratio of the velocity of the plate to the velocity of the free stream, but also on the suction/blowing parameter. ![]() ![]() The types of potential flows necessary for similar solutions to the boundary layer are determined and both analytical and numerical solutions are presented. A theoretical analysis for the laminar boundary layer flow of a non-Newtonian fluid on a continuous moving flat plate with surface strong suction/blowing is made. ![]()
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