Accession Number : ADA326614

Title :   Endwall Heat Transfer Measurements in a Transonic Turbine Cascade.

Descriptive Note : Technical memo.,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER

Personal Author(s) : Giel, P. W. ; Thurman, D. R. ; Van Fossen, G. J. ; Hippensteele, S. A. ; Boyle, R. J.

PDF Url : ADA326614

Report Date : DEC 1996

Pagination or Media Count : 17

Abstract : Turbine blade endwall heat transfer measurements are given for a range of Reynolds and Mach numbers. Data were obtained for Reynolds numbers based on inlet conditions of 0.5 and 1.0 x 10(exp 6), for isentropic exit Mach numbers of 1.0 and 1.3, and for freestream turbulence intensities of 0.25% and 7.0%. Tests were conducted in a linear cascade at the NASA Lewis Transonic Turbine Blade Cascade Facility. The test article was a turbine rotor with 136 deg of turning and an axial chord of 12.7 cm. The large scale allowed for very detailed measurements of both flow field and surface phenomena. The intent of the work is to provide benchmark quality data for CFD code and model verification. The flow field in the cascade is highly three-dimensional as a result of thick boundary layers at the test section inlet. Endwall heat transfer data were obtained using a steady-state liquid crystal technique.

Descriptors :   *HEAT TRANSFER, *THICKNESS, *TURBINES, *TRANSONIC FLOW, *CASCADES(FLUID DYNAMICS), STEADY STATE, MEASUREMENT, MODELS, INTENSITY, BOUNDARY LAYER, TURBULENCE, TEST EQUIPMENT, LIQUID CRYSTALS, GAS TURBINES, FLOW FIELDS, QUALITY, SURFACE PROPERTIES, STANDARDS, MACH NUMBER, SUPERSONIC FLOW, ROTORS, GAS TURBINE BLADES, FREE STREAM, EXITS, INLETS, WIND TUNNELS, REYNOLDS NUMBER, ISENTROPE.

Subject Categories : Fluid Mechanics
      Thermodynamics
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE