U.S.-Australia Cooperative Research: Numerical Simulations and Stochastic Modeling of Turbulent Mixing and Dispersion

这项资助将资助为期两年的旅费，使乔治亚理工学院航空航天工程系的杨培全博士和该系的研究生Catherine Moseley与位于维多利亚州Mordialloc的联邦科学与工业研究组织（CSIRO）大气研究部的Michael S. Borgas博士进行合作研究。合作研究将集中在紊流中污染物迁移和扩散的模拟和随机建模上。在空气污染问题中，由局部污染源引起的平均浓度区域主要由流体单元的无序运动决定，最好用流体力学的拉格朗日方法来描述。这些难以测量的数据可以从湍流中精确的瞬时动量和标量输运方程的数值模拟中提取出来。这项研究在加强环境中湍流分散的随机模型的发展方面具有特别的时效性。CSIRO实验室开展了一项大型大气研究计划，并与佐治亚理工学院现有的并行计算设施相结合，将使这项研究得以实现。澳大利亚的支持是通过工业、科学和旅游部提供的。

9526868 Yeung This award will support the travel costs, over a two year period, to enable Dr. Pui-kuen Yeung of the Aerospace Engineering Department at the Georgia Institute of Technology, and for Catherine Moseley, a graduate student in the Department, to conduct collaborative research with Dr. Michael S. Borgas from the Division of Atmospheric Research of the Commonwealth Scientific and Industrial Research Organization (CSIRO) located at Mordialloc, Victoria. The cooperative research will focus on simulation and stochastic modeling of contaminant transport and dispersion in turbulent airflows. In air pollution problems the mean concentration region arising from localized pollution sources is primarily determined by a disorderly motion of fluid elements best described using the Lagrangian approach of fluid mechanics. The data, which are difficult to measure, may be extracted from numerical simulations of the exact, instantaneous momentum and scaler transport equations in turbulence. This research is of particular timeliness in enhancing the development of stochastic models of turbulent dispersion in the environment. The CSIRO laboratory conducts a large atmospheric research program, and that combined with the parallel computing facilities available at the Georgia Institute of Technology, will enable this study to be realized. Support in Australia is provided through the Department of Industry, Science and Tourism (DIST).