Presidential Faculty Fellow

总统教员研究员

• 批准号: 9253488
• 负责人: Peyman Givi
• 金额: $ 30万
• 依托单位: SUNY at Buffalo
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-01 至 1996-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9253488&HistoricalAwards=false
• 关键词: Presidential; Faculty; Fellow

Research on this grant will be mainly centered in the areas of computation of combustion processes, numerical fluid dynamics, and turbulence. A key distinctive feature of the work involves model-free simulation of turbulent reactive flows, an approach divergent from traditional "closure" approaches to turbulence analysis. The major thrust of the research is concerned with development of a basic understanding of turbulent combustion phenomena, with a study of the pertinent issues as regards eventual application to practical industrial applications. The overall planned activities can be divided into four major areas: (1) study of fundamental issues as regards the physics of turbulence and turbulent combustion; (2) development of advanced computational tools for industrial use; (3) study of active and passive control of random and harmonic forcings for enhancement or suppression of mixing in a research combustor; and, (4) collaborative efforts in modeling of transport of gametes, spores, and planktonic of larvae of benthic species in turbulent flows. Among other outputs, this research should provide further insight into shortcomings associated with existing turbulence models and identify better approaches to improved (relative to current turbulent closure approaches) techniques for utilization in practical turbulent combustion modeling, providing guidance as to what types of approaches are most suitable for various classes of turbulent flow problems. In addition, the third study listed above has a long-term goal of establishment of input-output control devices/algorithms for definition and control of disturbances in practical combustion devices, while the fourth study is quite important as regards understanding of the dynamics of settlement and external fertilization in violent water motion and in modeling the ecology of wave-swept rocky shores.

这笔资助的研究将主要集中在燃烧过程计算、数值流体动力学和湍流领域。 这项工作的一个关键显着特征涉及湍流反应流的无模型模拟，这种方法不同于传统的湍流分析“闭合”方法。 该研究的主要重点是发展对湍流燃烧现象的基本理解，并研究最终应用于实际工业应用的相关问题。 总体计划的活动可分为四个主要领域：（1）湍流和湍流燃烧物理基本问题的研究； (2) 开发工业用先进计算工具； (3) 研究随机和谐波强迫的主动和被动控制，以增强或抑制研究燃烧器中的混合； (4) 合作研究湍流中底栖物种的配子、孢子和浮游幼虫的运输模型。 除其他成果外，这项研究应进一步深入了解与现有湍流模型相关的缺点，并确定改进（相对于当前湍流闭合方法）技术的更好方法，以用于实际湍流燃烧建模，为哪些类型的方法最适合各类湍流问题提供指导。 此外，上面列出的第三项研究的长期目标是建立输入输出控制装置/算法，用于定义和控制实际燃烧装置中的扰动，而第四项研究对于理解剧烈水流运动中沉降和外部施肥的动力学以及模拟波浪冲刷岩石海岸的生态学非常重要。