The gas-collecting hood is a device for gas collection.In order to investigate the influence of gas-collecting hood structure of coal coking tank on its internal flow field,the FLUENT software in computational fluid dynamics(CFD)was applied to simulate the changes of the flow field in the gas-collecting hood with the opening angles of 60 °,90 ° and 120 °,the changes of the flow field in the gas-collecting hood with the opening radians of 30 °,45 ° and 55 °,and the changes of the flow field in the gas-collecting hood with the pressure diffuser hood heights of 50 mm,100 mm and 150 mm.The results show that the internal flow field of the gas-collecting hood with the opening form of arc shape,the opening radians of 45 ° and the pressure diffuser hood heights of 100 mm are more uniform,which has a smaller outlet speed and less air quantity.According to the analysis of the internal flow field characteristics of different opening angles,different opening radians and the installation of different heights,it indicates that through changing the opening form and installing the diffuser hood with appropriate height can greatly reduce the air quantity of the gas-collecting hood.
关键词
集气罩/数值模拟/流场分析/结构优化/配风量
Key words
gas-collecting hood/numerical simulation/flow field analysis/structural optimization/air quantity
维普
万方数据