论文信息 - A NEW TEST FACILITY FOR EVALUATION OF PARAMETERS DEFINING NOZZLE GUIDE VANE ENDWALL HEAT TRANSFER

A NEW TEST FACILITY FOR EVALUATION OF PARAMETERS DEFINING NOZZLE GUIDE VANE ENDWALL HEAT TRANSFER

A new test facility has been built at Siemens in Finspong for aero- and thermodynamic investigation of the parameters defining nozzle guide vane endwall heat transfer. The overall objective of the work is to evaluate the heat transfer pattern on a master configuration endwall of a nozzle guide vane, which is used to validate a 3D Navier-Stokes CFD flow field and heat transfer calculation. The test rig consists of a linear cascade with 4 upscaled vanes. It is operated at low pressure and low temperature while retaining realistic engine Mach and Reynolds numbers. The two middle vanes are instrumented with pressure taps around the midspan section. Also the hub endwall is instrumented with pressure taps to monitor the pressure distribution. For the heat transfer tests the hub endwall is equipped with a thin-film heater foil. The tip endwall is equipped with four sapphire glass viewports to provide optical access to the heated hub endwall for an infrared camera. Also the leading edge of the middle vanes are equipped with thermocouples to control the approaching thermal boundary layer. The design of the test facility, the measuring and evaluation techniques for endwall heat transfer with its advantages and limitations are discussed.

[1] R. Goldstein,et al. Turbulent Transport on the Endwall in the Region Between Adjacent Turbine Blades , 1987 .

[2] Karen A. Thole,et al. Heat Transfer and Flowfield Measurements in the Leading Edge Region of a Stator Vane Endwall , 1999 .

[3] Hugh W. Coleman,et al. Experimentation and Uncertainty Analysis for Engineers , 1989 .

[4] P. W. Giel,et al. Endwall Heat Transfer Measurements in a Transonic Turbine Cascade , 1996 .

[5] Antonio Giovanni Perdichizzi. Mach Number Effects on Secondary Flow Development Downstream of a Turbine Cascade , 1990 .

[7] G. N. Kumar,et al. Regionally Averaged Endwall Heat Transfer Correlations for a Linear Vane Cascade , 1985 .

[8] Martin G. Rose,et al. Measurement and Calculation of Nozzle Guide Vane End Wall Heat Transfer , 1998 .

[9] Karen A. Thole,et al. High Freestream Turbulence Effects on Endwall Heat Transfer for a Gas Turbine Stator Vane , 2000 .

[10] Karen A. Thole,et al. High Free-Steam Turbulence Effects on Endwall Heat Transfer for a Gas Turbine Stator Vane , 2000 .

[11] Karen A. Thole,et al. Flowfield Measurements for a Highly Turbulent Flow in a Stator Vane Passage , 1999 .

[12] Martin G. Rose,et al. Measurement and Calculation of Nozzle Guide Vane End Wall Heat Transfer , 1999 .

[13] S. P. Harasgama,et al. Heat Transfer and Aerodynamics of a High Rim Speed Turbine Nozzle Guide Vane Tested in the RAE Isentropic Light Piston Cascade (ILPC) , 1990 .