Investigation of Hot Streak Migration and Film Cooling Effects on Heat Transfer in Rotor/Stator Interacting Flows. Report 1

Analysis of high Reynolds number inviscid/viscid interactions in cascades

“…10 with those obtained using the Navier-Stokes analysis of Ref. [29]. The agreement is excellent except in the immediate vicinity of the trailing edge.…”

“…5 with results obtained using the Navier-Stokes analysis of Dorney, et al [29] for the Re = 106 case. The N-S analysis uses the BaldwinLomax turbulence model [30], which is very similar to the Cebeci-Smith model used in SFLOW-IVI.…”

A numerical study of the effect of wake passing on turbine blade film cooling

“…Studies of film cooled turbine stages secondary flows in upstream blade rows. These have included unsteadiness [5], but have lacked secondary flows include tip clearance vortices, passage sufficient detail to isolate the important physical vortices, horseshoe vortices, and the relative eddy. It is phenomena associated with film coolant flow.…”

“…The blades have 67 degrees of turning and cooled blades through flow injection at selected grid one blade is film-cooled and instrumented. The points [5]. However,the computationaltime requiredfor instrumentation will consist of nickel thin film gauges such a computation in sufficient detail for this problem capable of resolving both chordwise and spanwise would be enormous, making it impractical to perform a variationsin unsteady temperature.…”

“…Through this effort, it is spanwise direction, and 90 degrees in the streamwise anticipated that improved physics-based unsteady film direction. Showerhead cooling was chosen because of coolant flow models will be formulated and incorporated the morepressing need for film cooling [5] and thelarger into the steady design codes, temporalfluctuationsin static pressure [11] in the leading edge region. The unsteady effects in turbines can generally be divided into two classes: two-dimensional effects IINSTEADYCOMPlITATIONDESCRIPTION in the spanwise direction.…”