Experimental Studies on Flow/Flame and Flame/Flame Interactions

流动/火焰和火焰/火焰相互作用的实验研究

• 批准号: 8820077
• 负责人: Siavash Sohrab
• 金额: $ 13.99万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-05-15 至 1992-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8820077&HistoricalAwards=false
• 关键词: Experimental; Studies; Flow; Flame; Interactions

The objective of the research is to experimentally simulate the flame- flow interactions encountered in turbulent combustion with a carefully controlled, rotating laminar flame undergoing various degrees of stretch. Opposed jet and stagnation point flows have been chosen because of their accessibility and two-dimensionality. Temperature, concentration, and velocity will be measured in reacting and unreacting environments, and the structure of secondary flows induced by rotation as well as resonance phenomena previously identified will be explored. Supporting experiments will be performed at the Combustion Research Facility of the Sandia National Laboratory, Livermore. Combustion in devices of practical application invariably involves turbulent flow in geometries not amenable to temporal measurement of the important scaler and velocity fields. Numerical predictions of the system performance require an understanding of the flame quenching and propagation processes that occur within the localized turbulent structures. Successful simulation of this complex phenomena through the proposed simple experiments will substantially contribute to our understanding.

研究的目的是实验模拟火焰- 湍流燃烧中遇到的流动相互作用， 受控制的旋转层流火焰， 伸展。 选择了反向射流和驻点流 因为它们的可访问性和二维性。 温度、 浓度和速度将在反应中测量， 无反应的环境，以及诱导的二次流的结构 通过旋转以及先前确定的共振现象， 被探索。 支持性实验将在 桑迪亚国家实验室的燃烧研究设施， 利弗莫尔 实际应用装置中的燃烧总是涉及到 几何形状不适合时间测量的湍流 重要的标量场和速度场。 的数值预测 系统性能要求了解火焰熄灭 以及发生在局部湍流中的传播过程 结构. 成功模拟这种复杂的现象， 所提出的简单实验将大大有助于我们 认识