Author(s)

L.A. Ali & J.J. Rencis

Abstract

A simplified boundary element approach for heat transfer in aerospace applications LA. Ali" & J.J. Rencis& M.4 ^ Mechanical Engineering Department, Worcester Polytechnic Institute, Worcester, Massachusetts ABSTRACT A boundary element formulation using isoparametric quadratic elements is presented for coupling two-dimensional and axisymmetric zones for steady-state heat transfer applications. The two-dimensional and axisymmetric zones are governed by the modified Helmholtz and Laplace equations, respectively. Tur- bine jet engines and turo-machines are two applications where the coupling strategy can be used in the aerospace industry. Rotating machinery or disks are modeled as axisymmetric zones while extended surfaces such as fins or blades are considered two-dimensional. Two examples are presented to demonstrate the accuracy of the proposed coupling technique. 1. INTRODUCTION Three-dimensional industrial applications require considerable modeling efforts and large

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