Characterization and simulation of particle distribution adjacent to moving particle beds and to rough surfaces

移动颗粒床和粗糙表面附近颗粒分布的表征和模拟

• 批准号: 155391-2008
• 负责人: Kuhn, David
• 金额: $ 1.54万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=476042
• 关键词: Characterization; simulation; particle; distribution; adjacent

Particle entrainment into the gas stream from stationary and moving particle beds is important in a number of industrial and physical environments. It has particlular relavance in rotary kilns, aeolian saltation and hydrological applications were there are strong flow rates adjacent to the surface. Specifically, in rotary kilns where the process material normally rotates as a bed with a highly turbulent flow normal to the rotation, dusting can lead to recycle of 30% of the process material. This recycled material not only reduces process efficiency but also leads to a significant energy cost as the materials is cooled then reheated. The objectives of the proposed research are to characterize and model particle entrainment from inclined stationary and moving particle beds in confined turbulent flows and particle distribution adjacent to rough wall in converging and diverging geometries. This research has the potential to significantly improve process efficiency and to reduce overall energy consumption in particle transport processes.

在许多工业和物理环境中，颗粒从静止和移动颗粒床夹带到气流中是重要的。它在回转窑、风成跃移和水文应用中具有特殊的相关性，这些应用是在表面附近有强流速的情况下。具体地，在旋转窑中，其中加工材料通常作为床旋转，具有垂直于旋转的高度湍流，除尘可以导致30%的加工材料的再循环。这种回收材料不仅降低了工艺效率，而且由于材料冷却然后再加热，还导致了显著的能源成本。建议的研究的目标是表征和模型的颗粒夹带从倾斜的静止和移动的颗粒床在受限的湍流和颗粒分布附近的粗糙壁在收敛和发散的几何形状。这项研究有可能显着提高工艺效率，并减少颗粒运输过程中的总能耗。