Coupling two-dimensional and axisymmetric boundary element zones for transient heat transfer applications

A dual reciprocity boundary element formulation using quadratic elements is presented for coupling two-dimensional and axisymmetric zones for transient heat transfer applications, The time-dependent modified Helmholtz and diffusion equations govern the two-dimensional and axisymmetric zones, respectively. Turbine jet engines and turbo-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. Three examples are presented to demonstrate the accuracy of the proposed coupling technique. (C) 2002 Elsevier Science Ltd. All rights reserved.