Accession Number : ADP007701

Title :   Numerical Representation of Heat Transfer into Turbine Blade Cooling Ducts,

Corporate Author : UNIVERSITY COLL OF SWANSEA (UNITED KINGDOM)

Personal Author(s) : Taylor, C. ; Xia, J. Y. ; Medwell, J. O. ; Morris, W. D.

Report Date : FEB 1992

Pagination or Media Count : 7

Abstract : A numerical representation of three dimensional turbulent flow within cooling ducts located in turbine blades and heat transfer into such ducts is effected using the finite element method. The importance of a coupled solid/fluid numerical model, when investigating heat transfer, is demonstrated by comparing numerical results with experimentally determined values relating to smooth, cylindrical rotating passages. Having verified the numerical model, the technique is then used to evaluate heat transfer into a multi-ribbed rotating cylindrical duct. The enhancement of heat transfer, due to Coriolis induced secondary motion and the incorporation of ribs, is predicted and compared with experimental measure ments.

Descriptors :   *HEAT TRANSFER, *THREE DIMENSIONAL FLOW, *TURBINE BLADES, *TURBULENT FLOW, *VENTILATION DUCTS, AUGMENTATION, BLADES, COOLING, DUCTS, FLOW, FLUIDS, HEAT, MODELS, MOTION, RIBS, SECONDARY, SOLIDS, TRANSFER, TURBINES, VALUE.

Subject Categories : Fluid Mechanics
      Thermodynamics
      Aerodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE