Unsteady Motion in Pipe Flow of Gas-Solid Suspensions and Modeling

气固悬浮液管流的非定常运动及建模

• 批准号: 9014914
• 负责人: Shao Soo
• 金额: $ 26.69万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-01 至 1994-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9014914&HistoricalAwards=false
• 关键词: Unsteady; Motion; Pipe; Flow; Gas

It is proposed to investigate the unsteady stratified motion of dense gas-solid suspensions in pipes. This is an energy efficient flow regime which occurs at relatively low velocities, but larger than the sediment velocity. A combination of experimental and theoretical studies will be undertaken. Measurements on mean and fluctuating parameters, including statistical correlations, will be performed in two test loop systems of 51 mm and 127 mm. The instrumentation development includes the corona charger probe for the velocity measurement. The basic equations for wave motion in stratified flow will be formulated. Finally, an approach to scale-up results obtained for horizontal conveying of dense gas-solid suspensions will be proposed. The results may be used for the design and scale up of gas- solid suspension transportation systems at relatively lower operation velocities, with positive effects on energy consumption, particle attrition and erosion of equipment.

提出了研究非定常分层运动的方法 管道中稠密的气固悬浮物。 这是一种能量 在相对较低的温度下发生的有效流态 速度，但大于沉积速度。 一 实验和理论研究相结合， 进行。 平均和波动参数的测量， 包括统计相关性，将在两个 51 mm和127 mm的测试回路系统。 发展包括电晕充电器探头的速度 测量. 波浪运动的基本方程 将形成分层流。 最后，一种方法， 水平输送高密度聚乙烯的放大结果 将提出气-固悬浮液。 研究结果可为燃气轮机的设计和放大提供参考。 固体悬浮输送系统在相对较低的 运行速度，对能源产生积极影响 消耗、颗粒磨损和设备腐蚀。