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A decelerated flow in a supersonic boundary layer containing a heat source modeling an electric discharge is studied numerically. Calculations are performed for a wide range of the source power. The possibility of controlling the boundary layer separation is demonstrated. The boundary layer separation on cooled walls is found to occur substantially later than on thermally insulated walls. [ABSTRACT FROM AUTHOR]

The effect of the thermal action on a turbulent supersonic boundary–layer flow is studied numerically. It is shown that the friction force on an isothermal surface decreases significantly. The effectiveness of using a thermal source for decreasing friction is evaluated. [ABSTRACT FROM AUTHOR]

This Letter is devoted to numerical investigation of the effect of the electric discharge on the separation of a turbulent boundary layer before a flat step. Electric discharge is simulated by a heat liberation source of the specified intensity and configuration. It is shown that separation is possible at a sufficiently large discharge power and nonzero bias voltage across the wall. [ABSTRACT FROM AUTHOR]