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dc.contributor.authorCai, Zhemin
dc.date.accessioned2019-08-26
dc.date.available2019-08-26
dc.date.issued2018-12-13
dc.identifier.urihttp://hdl.handle.net/2123/20961
dc.description.abstractThe use of discontinuous Galerkin (DG) methods to solve fluid thermal structure interaction problems in numerical modelling is known to offer several advantages. In particular, DG methods provide the flexibility of using different approximations in different elements, which makes the methods ideal for hp-adaptivity. The first objective of this thesis is to present a framework for the computation of fluid thermal structure interaction problems within both the single and multi-solid domain using DG methods on unstructured grids. The full solver consists of four main components: the incompressible fluid solver, the conjugate heat transfer solver, the linear elastic solver and the fluid to structure interaction solver. Based on an earlier developed DG solver for the incompressible Navier-Stokes equation, the fluid advection-diffusion equation, the Boussinesq term, the solid heat equation and the linear elastic equation are introduced using an explicit DG formulation. A Dirichlet-Neumann partitioning strategy has been implemented to achieve the data exchange process via the numerical flux of interface quadrature points in the fluid-solid interface. Formal h and p convergence studies employing the method of manufactured solutions demonstrate that the expected order of accuracy is achieved. Computational effort is documented in detail demonstrating precisely that for all cases the highest order accurate algorithm has several magnitudes lower error than lower-order schemes for a given computational effort. Secondly, this thesis has proposed a detailed compact thermoelectric cooler (TEC) modelling method based on an existing black box like compact TEC model. Close comparisons validate that both the detailed and the black box like compact model are accurate enough to simulate the conduction only case. When air convection is required to carry out a system-level thermal management optimization, the detailed compact modelling method is more reliable.en_AU
dc.publisherUniversity of Sydneyen_AU
dc.publisherFaculty of Engineering and ITen_AU
dc.publisherSchool of Aerospace, Mechanical and Mechatronic Engineeringen_AU
dc.rightsThe author retains copyright of this thesis. It may only be used for the purposes of research and study. It must not be used for any other purposes and may not be transmitted or shared with others without prior permission.en_AU
dc.subjectDiscontinuous Galerkinen_AU
dc.subjectFluid thermal structure interactionen_AU
dc.subjectThermo electronic cooleren_AU
dc.subjectmanufactured solutionen_AU
dc.subjectIncompressible navier-stokeen_AU
dc.subjectnatural convectionen_AU
dc.titleA High-order Discontinuous Galerkin Method for Simulating Incompressible Fluid-Thermal-Structural Problemsen_AU
dc.typePhD Doctorateen_AU
dc.type.pubtypeDoctor of Philosophy Ph.D.en_AU
dc.description.disclaimerAccess is restricted to staff and students of the University of Sydney . UniKey credentials are required. Non university access may be obtained by visiting the University of Sydney Library.en_AU


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