Abstract
In this paper, the film cooling effectiveness for cylindrical and fan-shaped holes is numerically investigated in a 3-D model on the surface of a flat plate with and without the attendance of a plasma actuator. The electric force produced by a plasma actuator is employed as a body force into a finite volume based Navier–Stokes solver. Incompressible, viscous and turbulent flow has been simulated by the Fluent CFD code with the low-Re k-ε turbulence model. The results show that the fan-shaped holes provide higher film cooling effectiveness than cylindrical holes. The influences of flow, geometric and electrical variables on the performance of film cooling have been discussed. Finally, the group method of data handling (GMDH)-type neural networks has been used for presenting a relationship for area weighted average adiabatic film cooling effectiveness. Predicted results for film cooling effectiveness showed that GMDH model can provide beneficial information for simulation of film cooling process.
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