NSF Young Investigator

NSF 青年研究员

• 批准号: 9258445
• 负责人: Patrick McMurtry
• 金额: $ 28.18万
• 依托单位: University of Utah
• 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 1999-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9258445&HistoricalAwards=false
• 关键词: NSF; Young; Investigator

Modeling and analytical studies will be carried out for turbulent combustion systems. Included in these studies will be efforts directed at development of better understanding of fundamental mixing processes. This research will be carried out in two basic stages: (1) An analytical study to shed light on the dependency of time evolution of chemical composition as a function of the mixing parameters governing various systems of interest; (2) A model development and implementation effort to apply new ideas in turbulent mixing modeling to full scale combustion systems. In this activity, the turbulent mixing and reaction processes will initially be modeled based on ideas developed in prior formulation of a linear eddy model, the only current model formulation that allows for distinction between the effects of molecular diffusion and turbulent stirring at the smallest turbulent scale of the flow; such a distinction is required for accurate prediction of the small- scale mixing which governs turbulent combustion processes. An advanced formulation which can be used in industrial combustion applications will be pursued. Part of the research project will be devoted to implementation of such models and resulting computer codes on massively parallel computing machines. Energy conservation and environmental protection issues provide a strong impetus for development of cleaner, more efficient combustion processes. Since most combustion occurs in a turbulent environment and it is the turbulent mixing that governs the overall combustor performance in most cases, it is very important that turbulent mixing and combustion be treated in a more comprehensive manner than in the past. As part of this program, models will be applied to realistic combustion chemistries for analysis of energy production and pollutant formation.

将进行建模和分析研究， 湍流燃烧系统 这些研究将包括 努力提高对 基本的混合过程 这项研究将在 分两个基本阶段：（1）分析研究， 化学成分随时间的变化， 控制各种系统的混合参数的函数 （2）模型开发和实施工作 将湍流混合模型中的新思想应用于全尺寸 燃烧系统。 在这个活动中，湍流混合 反应过程最初将基于 在线性涡流模型的现有公式中发展的思想， 目前唯一允许区分 分子扩散和湍流的影响 在流动的最小湍流尺度下搅拌;这样的 准确预测小微 控制湍流燃烧过程的尺度混合。 一个 先进的配方，可用于工业 将继续进行燃烧应用。 研究的一部分 该项目将致力于实施这些模式， 大规模并行计算的计算机代码 机械. 节能环保问题 为发展更清洁、更环保的 高效的燃烧过程。 由于大多数燃烧发生在 在湍流环境中，正是湍流混合， 在大多数情况下，它控制着整个燃烧室的性能， 处理湍流混合和燃烧是非常重要的， 以比过去更全面的方式。 的一部分 该计划，模型将被应用到现实的燃烧 能源生产和污染物分析化学 阵