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»ã±¨±êÌâ(Ó¢ÎÄ)£ºGlobal Numerical Modeling and Simulation of Crystal Growth Processes

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»ã±¨ÄÚÈݼò½é£ºIn order to develop a fully automatic simulator predicting the entire crystal growth process, new efficient, robust and high-quality automatic unstructured mesh generation algorithms with enough flexibility for any complex geometry will be presented. The convection problem in crystal growth processes represents one of the biggest challenges of crystal growth modeling, accordingly a Finite Element Navier-Stokes solver based on unstructured meshes will be detailed, and an enhanced turbulence models based on the classical mixing-length or k−l model, together with a generic transformation method to avoid negative k when solving the turbulent kinetic energy equation by the Newton-Raphson iterative method will be introduced, and laminar and turbulent mathematical models governing the gas convection, thermal distribution and oxygen concentration will be presented and Finite Element numerical methods to solve these governing equations on unstructured meshes will be introduced.

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