Particle Surface Interactions and Their Modeling in Particulate Flows

颗粒流中的颗粒表面相互作用及其建模

• 批准号: 9012309
• 负责人: Awatef Hamed
• 金额: $ 16.11万
• 依托单位: University of Cincinnati Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-06-15 至 1993-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9012309&HistoricalAwards=false
• 关键词: Particle; Surface; Interactions; Their; Modeling

It is proposed a combined experimental and computational study of particle-wall interaction in two-phase gas-solid flow. The experimental work will be conducted in a wind tunnel in which the velocity, particle concentration, target orientation and temperature and controlled. The impact and rebound particle velocity will be measured for different particle-target material combinations. The frequency of occurrence of a rebound velocity as a function of the impact velocity and impact conditions will be analyzed and compared to a probabilistic model. This is an interdisciplinary project, with aspects related to fluid mechanics, materials, computer simulation and laser measurements. The project is expected to make a useful contribution to particle-wall interaction modeling and erosion prediction in gas-solid particle flow, with application to turbines, compressors, combustion chambers and different chemical processes.

提出了对两相气体固体流动中颗粒壁相互作用的合并实验和计算研究。 实验工作将在风洞中进行，其中速度，颗粒浓度，目标取向和温度以及受控的速度。 将针对不同的粒子目标材料组合测量冲击和反弹粒子速度。 将分析反弹速度随冲击速度和影响条件的函数的发生频率，并将其与概率模型进行比较。 这是一个跨学科项目，其方面与流体力学，材料，计算机模拟和激光测量有关。 预计该项目将对气壁相互作用建模和气体固体颗粒流的侵蚀预测做出有用的贡献，并应用于涡轮机，压缩机，燃烧室和不同的化学过程。