Title

Bem/Fvm Conjugate Heat Transfer Analysis Of A Three-Dimensional Film Cooled Turbine Blade

Keywords

Boundary elements; Coupled phenomena; Finite volume; Heat transfer

Abstract

We report on the progress in the development and application of a coupled boundary element/finite volume method temperature-forward/flux-back algorithm developed to solve conjugate heat transfer arising in 3D film-cooled turbine blades. We adopt a loosely coupled strategy where each set of field equations is solved to provide boundary conditions for the other. Iteration is carried out until interfacial continuity of temperature and heat flux is enforced. The NASA-Glenn explicit finite volume Navier-Stokes code Glenn-HT is coupled to a 3D BEM steady-state heat conduction solver. Results from a CHT simulation of a 3D film-cooled blade section are compared with those obtained from the standard two temperature model, revealing that a significant difference in the level and distribution of metal temperatures is found between the two. Finally, current developments of an iterative strategy accommodating large numbers of unknowns by a domain decomposition approach is presented. An iterative scheme is developed along with a physically-based initial guess and a coarse grid solution to provide a good starting point for the iteration. Results from a 3D simulation show the process that converges efficiently and offers substantial computational and storage savings.

Publication Date

1-1-2003

Publication Title

International Journal of Numerical Methods for Heat and Fluid Flow

Volume

13

Issue

5-6

Number of Pages

581-610

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1108/09615530310482463

Socpus ID

0141989558 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0141989558

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