摘要
冲洗装置是拦藻装备的重要组成部分,而喷嘴是冲洗装置的核心,选择合适的喷嘴对提高藻类冲洗效率至关重要。运用Fluent软件,对锥型缩口喷嘴喷水过程进行仿真模拟,探究不同收缩角度对出口水流的集束性和流速的影响,得到喷嘴的最佳收缩角度。结果表明,10°~30°收缩角度范围内的锥型缩口喷嘴喷出的水流集束性较好,在此范围内,随着收缩角度增大,喷嘴出口水流流速相应增大,而集束性相应减弱;考虑集束性和流速,当收缩角为22°时,锥型缩口喷嘴性能最佳。
The flushing device is an important part of the algae blocking equipment.Nozzle is the core of the flushing device.It is very important to select the appropriate nozzle to improve the efficiency of algae flushing.Water spraying proccess of taper nozzle is simulated used by fluent software.The influence of different contraction angle on the concentration and velocity of outlet water flow is explored,and the optimal contraction angle of nozzle is obtained.The results show that the conical nozzle with contraction angle from 10°to 30°has a better concentration of water.In this range,with the increase of the contraction angle,the flow velocity at the nozzle outlet increases correspondingly,while the bundiness concentration decreases correspondingly.When the contraction angle is 22°,the conical nozzle has the best performance.
作者
尚力阳
张智勇
范素香
郝用兴
于鹏辉
胡畔
SHANG Liyang;ZHANG Zhiyong;FAN Suxiang;HAO Yongxing;YU Penghui;HU Pan(Yellow River Machinery CO.LTD.,Yellow River Conservancy Commission,Zhengzhou 450006,China;North China University of Water ResourcevS and Electric Power,Zhengzhou 450045,China)
出处
《河南水利与南水北调》
2021年第7期85-87,共3页
Henan Water Resources & South-to-North Water Diversion
基金
河南省高等学校重点科研项目资助计划“花生联合收获机关键技术研究”(编号:19A460026)
河南省科技发展计划“小型管材三维自由弯曲成形工艺与设备关键技术研究”(编号:212102210347)
河南省科技攻关项目“岩石节理特征与滚刀结构参数对滚刀破岩效率的研究”(编号:202102210273)。
关键词
喷嘴
冲洗装置
数值模拟
收缩角
nozzle
flushing device
numerical simulation
contraction angle
