内孔式旋转空化发生器的数值计算研究

发布时间：2018-04-20 21:26

  本文选题：水力空化 + 旋转结构　； 参考：《北京理工大学学报》2017年01期

【摘要】：采用数值计算方法研究了内孔式旋转空化发生器的空化机理,并讨论了不同孔结构对其空化流动的影响.研究结果表明:当孔内压力降低到水的饱和蒸汽压时,孔内将发生剧烈空化现象;孔内存在明显的水汽交界面,由于转子的高速旋转,交界面附近水汽交换显著;结构参数中孔深L、孔径D和孔倾角α对空化区域大小及水汽交换效果有显著的影响,在转速为2 850r/min的条件下,孔倾角为30°,孔径为23mm,孔深为35mm时空化和水汽交换效果最好.
[Abstract]:The cavitation mechanism of rotating cavitation generator with inner hole is studied by numerical method, and the influence of different pore structure on cavitation flow is discussed. The results show that when the pressure in the hole decreases to the saturated vapor pressure of water, there will be a violent cavitation phenomenon in the hole, and there is an obvious water vapor interface in the hole, and because of the high speed rotation of the rotor, the water vapor exchange near the interface is remarkable. Among the structural parameters, the hole depth L, pore diameter D and hole inclination 伪 have significant effects on the cavitation region size and water vapor exchange efficiency. Under the condition of 2 850r/min rotational speed, the hole inclination angle is 30 掳, the pore diameter is 23 mm, the hole depth is 35mm space-time and the water vapor exchange effect is the best.
【作者单位】： 北京理工大学机械与车辆学院;
【基金】：国家自然科学基金资助项目(51479002)
【分类号】：O35
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本文编号：1779522