Predictions of heat transfer in turbine blades with a 2-equation model of turbulence

Shembharkar, TR and Pai, BR (1982) Predictions of heat transfer in turbine blades with a 2-equation model of turbulence. In: Heat transfer 1982; Proceedings of the Seventh International, 6-10 Sept 1982, Munich, West Germany.

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Abstract

Free-stream turbulence has an important effect on the local heat transfer coefficient around turbine blades. The prediction of this effect is attempted within the framework of the k-epsilon model of turbulence. Validation of the model with data for a flat plate with imposed pressure gradients as well as turbine cascade data is13; examined. It is found that qualitatively, the model predicts the bserved trends, though there are significant differences between the data sets and the predictions. Somewhat better correlation can be obtained by numerical modification of the Reynolds number dependency of the model. With the suggested modification in the model, the13; predictions on the suction surface are encouraging and within about 30 percent of the observed values.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Heat Transfer Coefficients;Mathematical Models;Turbine Blades;Turbulence Models;Turbulent Heat Transfer;Flat Plates;Free Flow;Gas Turbnines;Inlet Flow;K-Epsilon Turbulence Model;Pressure Gradients;Reynolds Number
Subjects: AERONAUTICS > Aerodynamics
Division/Department: Propulsion Division, Propulsion Division
Depositing User: Ms Indrani V
Date Deposited: 06 Jul 2007
Last Modified: 24 May 2010 09:55
URI: http://nal-ir.nal.res.in/id/eprint/4236

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