Application of a multilevel unstructured staggered solver to thermal electronic simulations

This paper describes an application of a novel computational fluid dynamics solution procedure to thermal electronic simulations. The mathematical formulation employs a hierarchy of Cartesian grids and a face to cell connectivity graph to discretise the differential equations. The method uses a finite volume scheme with staggered variable arrangement and a pressure-based segregated iteration procedure to solve a discrete algebraic analogue of the Navier-Stokes equations. The paper is concerned primarily with the application and validation of the proposed technique and shows its advantages and flexibility when handling complex industrial applications comprising a large number of multi-scale geometrical objects and physical solution regions.