![]() ![]() ![]() Indeed, turbulent flows in cores and oceans significantly influence the planets thermal and orbital evolution, because of heat advection, viscous dissipation, and coupling with the overlying/underlying solid shells. Beyond the challenge in fundamental fluid dynamics to understand these complex motions involving turbulence, rotation, and buoyancy effects at typical spatial and temporal scales well beyond our day-to-day experience, a global knowledge of the involved processes is fundamental to a better understanding of the global dynamics of planets. Understanding the flows taking place in these spherical shell envelopes remains a tremendous interdisciplinary challenge, despite more than one century of intense research. ![]() Targeted applications of the new advanced computational tools would include the prediction of high-pressure combustion and pollutant emissions, including soot, for conventional and bio-based fuels, LES of thermo-acoustical phenomena in turbulent premixed flames, and the prediction of non-equilibrium micro-channel and plasma flows.Numerous planetary bodies have or had a global, internal fluid layer, such as a liquid iron-rich core in the deep interior of terrestrial planets and moons, or a salty water ocean below the solid surface of icy satellites. Groth’s CFD and Propulsion group includes: (i) development of AMR and embedded mesh strategies for treatment of complex and possibly moving geometries and interfaces using hybrid multi-block meshes consisting of both body-fitted structured and more generally unstructured grid blocks (ii) development of high-order finite-volume spatial discretization procedures on structure and unstructured mesh for improved solution accuracy (iii) development of fully anisotropic mesh refinement techniques with refinement criteria based on dual-weighted reconstruction and residual error estimates (iv) design of efficient and scalable parallel implementations with two-levels of parallelism – coarse-grain parallelization via domain decomposition and fine-grain parallelization – for more effective use of future petascale and exascale high-performance computing hardware and (v) and development of improved parallel implicit time-marching schemes based on Newton-Krylov-Schwarz (NKS) approaches. The current and planned research activity of Prof. He is the author and co-author of nearly fifty journal articles and nearly 120 conference papers, has been involved in organizing both national and international conferences, is currently a member of the Scientific Committee for the International Conference on Computational Fluid Dynamics and University of Toronto SciNet Technical Advisory Committee, and is a past president and member of the Board of Directors of the Computational Fluid Dynamics Society of Canada. Industrial research partners include Rolls-Royce Canada and Pratt & Whitney Canada, two leading manufacturers of gas turbine engines for aviation and power generation applications. His current research focuses primarily on the development of reliable and robust, parallel, high-order, AMR, finite-volume methods mesh for the solution of multi-scale, physically-complex flows and the application of these techniques to numerical combustion modelling, including research on large-eddy simulation (LES) techniques for turbulent premixed, non-premixed, and partially premixed combusting flows, as well as fundamental studies of laminar flames for bio-based fuels under high-pressure gas-turbine-like conditions. He also has expertise in the computation of reactive, non-equilibrium, rarefied, and magnetized flows, and the development of generalized transport models and solution methods following from kinetic theory. Clinton Groth is a theoretical and computational fluid dynamicist with expertise in finite-volume schemes for compressible non-reacting and reacting flows and in the development of parallel adaptive mesh refinement (AMR) methods.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |