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ISSN Online: 2377-424X

International Heat Transfer Conference 12
August, 18-23, 2002, Grenoble, France

Conjugate Flow and Heat Transfer Investigations of Turbine Nozzle Guide Vanes

Get access (open in a dialog) DOI: 10.1615/IHTC12.5330
6 pages

要約

The conventional method for the prediction of the thermal load on gas turbine nozzles and blades needs prescribed boundary conditions for the heat transfer. On the external surfaces, the heat transfer is often determined by a fluid flowcalculation with a fixed heat flux rate. By application of an advanced Conjugate Calculation Technique a directly coupled calculation of fluid flow, heat transfer and heat conduction in the solid body can be performed. Thus, in contrast to the conventional approach, the conjugate method does not require the heat transfer boundary condition and the interaction of fluid flowand heat transfer is also taken into account. In this paper, the results of the numerical investigation of two convection-cooled turbine nozzle guide vanes are presented. The investigation focuses on the accuracy of the local thermal load prediction in comparison to the experimental results of the chosen test cases. Even in complex flowreg ions with boundary layer transition or shock-boundaryinteractions, the method can be applied with high accuracy. The results also show the superior quality of the Conjugate Calculation Technique, when they are compared to the numerical results of the conventional approach.