CFD ANALYSIS OF COVERPLATE RECEIVER FLOW

The flow field in a preswirled cooling air supply to a turbine rotor h as been investigated by means of CFD simulations. Coefficients for sys tem efficiency are derived The influences of various geometric paramet ers for different configurations have been correlated with the help of appropriate coefficients. For some of the most important geometric pa rameters of the coverplate receiver, design recommendations have been made. For the preswirl nozzles, the potential of efficiency improvemen t by contour design is highlighted.