摘要
利用空化特性使喷嘴显著提高射流的清洗效果。利用CFD工具对空化喷嘴内外流场进行了两相流的数值模拟。比较分析了不同进气压力、水和空气进入空化腔的角度和空气进入空化腔的位置对流场的影响,并对仿真结果进行了分析研究。结果表明,随着进气压力的增加,经喷嘴射流的流体速度增加,出口含水量减少。水进入空化腔角度为10°,空气进入空化腔角度为135°,且入射位置距空化腔左侧壁8 mm处时喷嘴具有较好的冲洗能力,并且射程较远。计算结果为喷嘴的进一步设计和研究提供了有益的参考。
Using the cavitation can improve the cleaning effect of nozzle significantly. CFD in analysis of field flow in the cavitation nozzle is applies. On the different inlet pressure, water and air＇ s angle that into the cavitation chamber and the location of air channels are contrast analysed, then analysed the simulation results. The simulation results show that with the increase of inlet pressure, the velocity increases, the water content reduces ; the angle of water enters the cavitation chamber is 10 degrees, the angle of air is 135 degrees, and the location is 8 mm has bet- ter capability of flushing, and the range is farer. The calculation results provide useful reference for nozzle＇ s design and research.
出处
《科学技术与工程》
北大核心
2012年第34期9173-9177,9185,共6页
Science Technology and Engineering
关键词
空化喷嘴
动压
入射倾角
射程
cavitation nozzle dynamic incidence angle range
