An Investigation of Numerical Methods for Conjugate Heat Transfer Based on Discontinuous Galerkin Methods

• 1、Institution of Gas Turbine, Department of Thermal Engineering, Tsinghua University, Beijing 100084

Abstract：In this paper, A framework for the simulations of conjugate heat transfer (CHT) problems using discontinuous Galerkin (DG) methods on unstructured grids is presented. The compressible fluid dynamic equations and solid heat conduction equations are discretized into the explicit DG formulations simultaneously. The Bassi-Rebay method is used in the gradients computation inside both fluid and solid domains. Fully coupled strategy based on the data exchange process via the numerical flux of interface quadrature points is devised. The methodology is validated by a series of test cases and can be viewed as a first attempt towards further investigations of DG and other high-accuracy methods applications in the engineering CHT problems.

Keywords： Power Machinery and Engineering Conjugate Heat Transfer Discontinuous Galerkin Methods Data Transfer on the Interface Cooling Technology in Turbomachine.