IGTC-108 Combined Aerodynamic and Thermal Analysis of a High-Pressure Turbine Nozzle Guide Vane(Organized Session I ADVANCED COMPUTATIONAL SIMULATION AND DESIGN)

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概要

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• The thermal design of contemporary high-pressure turbine nozzle guide vanes clearly represents one of the most difficult engineering tasks in the design of any modern gas turbine. Aerodynamic and thermal analysis procedures currently available to turbine designers have deficiencies that do not allow an a priori design without expensive experimental development iterations. One of the major problems is the determination of the heat transfer between hot gas and blade material. In this paper a numerical procedure is presented for the combined calculation of fluid flow and heat transfer in solid bodies. The numerical scheme works on the basis of an implicit finite volume method with a third order accurate local characteristic flux extrapolation scheme for the evaluation of the inviscid fluxes. A multi-block technique is used to divide the physical domain into different blocks for fluid flow and wall regions. The full, compressible, three-dimensional Navier-Stokes equations are solved within the fluid blocks. The Fourier equation for heat conduction is solved within the solid body blocks. At the area of contact, coupling of fluid blocks and solid body blocks is done via a common wall temperature, calculated from the local heat flux at each iteration. Results for the combined aerodynamic and thermal numerical investigation of a cooled, high-pressure turbine nozzle guide vane are presented. The comparison of numerical and experimental results demonstrates the performance of the code for the prediction of the flow field, which is characterized by passage Mach number variations from low subsonic levels to the supersonic range. The high accuracy of the flow calculation is a necessary condition for the correct determination of the heat transfer which is strongly influenced by viscous effects in the near wall region.

• 公益社団法人日本ガスタービン学会の論文

著者

• Bohn D.

  Institute Of Steam And Gas Turbines Aachen University Of Technology

• Bonhoff B.

  ABB Corporate Research

• Schonenborn H.

  Institute of Steam and Gas Turbines, Aachen University of Technology

• Schonenborn H.

  Institute Of Steam And Gas Turbines Aachen University Of Technology

関連論文

• IGTC-40 Numerical Simulation of Premixed Flame Combustion using Systematically Reduced Reaction Mechanisms(Session B-5 NUMERICAL ANALYSIS OF COMBUSTION)
• IGTC-108 Combined Aerodynamic and Thermal Analysis of a High-Pressure Turbine Nozzle Guide Vane(Organized Session I ADVANCED COMPUTATIONAL SIMULATION AND DESIGN)

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