International Research Fellowship Program: High-Performance Models for the Growth of Single Crystals by the Vertical Bridgman Technique

国际研究奖学金计划使美国科学家和工程师能够在国外进行三到二十四个月的研究。 该计划的奖项提供了联合研究的机会，以及使用国外独特或互补的设施，专业知识和实验条件。 该奖项将支持Paul J. Sonda博士与Georg Muller博士在德国埃尔兰根-纽伦堡大学开展为期12个月的研究。该项目旨在开发新的计算模型，用于分析和优化晶体生长过程。 这个联合项目将整合一个现实的和用户友好的二维炉传热模型，由主机实验室开发的CrysVUn++代码，用于计算连续传输和晶体生长中的界面现象的三维晶体生长代码，由明尼苏达大学Jeff Derby博士的小组开发。 这种安排有利于研究晶体生长中的三维传输现象，通过隔离一些最复杂的方面的问题，即那些与炉的几何形状和辐射传热，到外部区域中，CrysVUn++使用。 这种集成的关键是应用模型边界条件，以确保最佳精度和收敛性。 一旦这些模型被开发出来，它们将被应用于研究晶体生长系统内的传输现象。

0307054SondaThe International Research Fellowship Program enables U.S. scientists and engineers to conduct three to twenty-four months of research abroad. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad. This award will support a twelve month research fellowship by Dr. Paul J. Sonda to work with Dr. Georg Muller at the University of Erlangen-Nurnberg in Germany.This project seeks to develop new computational models for the analysis and optimization of crystal growth processes. This joint project will integrate a realistic and user-friendly two-dimensional model for furnace heat transfer, the CrysVUn++ code developed by the host lab, with a three-dimensional, crystal growth code used for computing continuum transport and interfacial phenomena in crystal growth, developed by Dr. Jeff Derby's group at the University of Minnesota. This arrangement facilitates the study of three-dimensional transport phenomena in crystal growth by isolating some of the most complicated aspects of the problem, namely those related to furnace geometry and radiative heat transfer, to an outer region in which CrysVUn++ is used. The key to this integration is the application of model boundary conditions to ensure optimal accuracy, and convergence. Once these models have been developed, they will be applied to study transport phenomena within crystal growth systems.