The flow and thermal fields developed over an internally cooled turbine inlet guide vane have been analyzed numerically. For this purpose, a robust and rapid Navier-Stokes flow solver in the finite volume form has been developed that uses an explicit four-stage Runge-Kutta integration technique in the physical space. Local time stepping, variable coefficient implicit residual smoothing and a full multigrid method have been implemented to accelerate the steady state calculations. Turbulence is simulated by the Baldwin-Lomax algebraic model. Results obtained are in good agreement with the experimental data. The main thrust of the paper is to examine the effects of variable wall temperature, which occurs as a result of internal convective cooling, on prediction of blade surface heat transfer.
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