气液耦合激振与超声空化数值模拟运动学分析
发布时间：2018-08-30 15:17
【摘要】：提出了一种将外加气体与液压油结合起来的气液耦合激振方式,通过控制气脉冲与液压油形成的空化泡发生生长和破灭,从而产生空化作用对液压系统内部污染物进行分散与剥离;开发了以气液耦合波动为激振方式的气液激振试验系统,建立了波动发生器作用下的气泡运动学方程;数值模拟了波动发生器与超声波作用下空化泡的运动学过程,并进行了对比分析,发现低频的波动发生器作为激振源使气泡产生的空化作用是显著的,为气液耦合激振作用下气泡空化过程的可控性研究提供了部分理论依据。
[Abstract]:In this paper, a gas-liquid coupling excitation method is proposed, which combines the applied gas with the hydraulic oil. By controlling the cavitation bubble formed by the gas pulse and the hydraulic oil, the cavitation bubble is grown and burst. The cavitation effect is produced to disperse and peel the pollutants in the hydraulic system, and the gas-liquid vibration test system is developed, and the bubble kinematics equation under the action of the wave generator is established. The kinematic process of cavitation bubble under the action of wave generator and ultrasonic wave is numerically simulated and compared and analyzed. It is found that the cavitation effect caused by wave generator at low frequency as a source of excitation is remarkable. It provides some theoretical basis for the controllability study of bubble cavitation process under gas-liquid coupling excitation.
【作者单位】： 洛阳理工学院机械工程学院;
【基金】：国家自然科学基金(U1404513)
【分类号】：TH137
[Abstract]:In this paper, a gas-liquid coupling excitation method is proposed, which combines the applied gas with the hydraulic oil. By controlling the cavitation bubble formed by the gas pulse and the hydraulic oil, the cavitation bubble is grown and burst. The cavitation effect is produced to disperse and peel the pollutants in the hydraulic system, and the gas-liquid vibration test system is developed, and the bubble kinematics equation under the action of the wave generator is established. The kinematic process of cavitation bubble under the action of wave generator and ultrasonic wave is numerically simulated and compared and analyzed. It is found that the cavitation effect caused by wave generator at low frequency as a source of excitation is remarkable. It provides some theoretical basis for the controllability study of bubble cavitation process under gas-liquid coupling excitation.
【作者单位】： 洛阳理工学院机械工程学院;
【基金】：国家自然科学基金(U1404513)
【分类号】：TH137
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