CAREER: New Directions in the Variational Multiscale Formulation of Large Eddy Simulation

职业生涯：大涡模拟变分多尺度公式的新方向

• 批准号: 0735413
• 负责人: Assad Oberai
• 金额: $ 40万
• 依托单位: Rensselaer Polytechnic Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-07-01 至 2011-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0735413&HistoricalAwards=false
• 关键词: CAREER; New; Directions; Variational; Multiscale

PROPOSAL NO.: CTS-0449151PRINCIPAL INVESTIGATORS: ASSAD OBERAIINSTITUTION: BOSTON UNIVERSITYCAREER: NEW DIRECTIONS IN THE VARIATIONAL MULTISCALE FORMULATION OF LARGE EDDY SIMULATIONOver the last three decades, Large Eddy Simulation (LES) has emerged as an important technique in simulating turbulent flows, with applications in environmental, aerospace, automotive, marine, and material processing research and industry. The growth in the use of LES has been spurred by applications where the resolution of large scale eddies is necessary, and by the advent of massively parallel computers and affordable workstation clusters. This has resulted in the development of several new promising LES formulations, including the variational multiscale (VMS) method. The research funded by this grant will advance the state-of-the-art in LES in general, and the VMS formulation of LES in particular. New, robust and accurate VMS models will be derived, algorithms for their application to flows in complex geometries will be developed, the VMS concept will be extended to turbulent mixing and compressible flows, and systematic studies will be performed to evaluate the proposed models and methods. The development of dynamic VMS could have a beneficial impact on LES simulations, especially if their use in practical applications is demonstrated. The educational program includes activities at the high school level, course improvement at the undergraduate level, and course development at the graduate level. Educational emphasis is proposed in the form of development and use of computational modules for students to "experiment" with simple flows. Science and engineering will be made more accessible and "fun" to high-school students by utilizing computer simulations to visualize hidden physical phenomena and to perform stimulating virtual experiments. High school teachers and students will be trained in topics on wave propagation and fluid mechanics. At undergraduate and graduate levels, students will be rigorously trained in fluid mechanics, numerical simulations and turbulence modeling. At all levels, efforts will be made to hire students from underrepresented groups in science and engineering.

建议编号：CTS-0449151 PRINCIPAL研究员：ASSAD OBERAIINSTUTION：波士顿大学：大涡模拟变分多尺度公式的新方向在过去的三十年里，大涡模拟(LES)已成为模拟湍流的一种重要技术，在环境、航空航天、汽车、海洋、材料加工研究和工业中得到应用。大规模并行计算机和负担得起的工作站集群的出现，刺激了大涡模拟系统的应用，其中大尺度涡旋的分辨率是必需的。这导致了几个新的有希望的大涡模拟公式的发展，包括变分多尺度(VMS)方法。由这笔拨款资助的研究将推动LES总体上的最先进水平，特别是LES的VMS配方。将推出新的、稳健的和精确的VMS模型，开发算法将其应用于复杂几何形状的流动，VMS的概念将扩展到湍流混合和可压缩流动，并将进行系统的研究，以评估所提出的模型和方法。动态VMS的发展可能会对大涡模拟产生有益的影响，特别是如果它们在实际应用中得到证明的话。教育计划包括高中阶段的活动、本科阶段的课程改进和研究生水平的课程开发。教育的重点是开发和使用计算模块，让学生用简单的流程进行“实验”。通过利用计算机模拟来可视化隐藏的物理现象并进行激动人心的虚拟实验，高中生将更容易接触到科学和工程，并使其更具趣味性。高中教师和学生将接受有关波传播和流体力学的培训。在本科生和研究生阶段，学生将接受流体力学、数值模拟和湍流建模方面的严格培训。在各级努力招收理工科代表性不足群体的学生。