论文部分内容阅读
通过对液一液水力旋流器速度场的测试与理论分析,指出分散相液滴在径向所受的力主要有:切向加速度产生的离心力,其方向远离轴心;径向压力场产生的径向力,其方向指向轴心;径向运动阻力──斯托克斯力,其方向指向器壁;旋转流场产生的马格纳斯为,其方向在外涡流区指向轴心,在内涡流区远离轴心。此外,分散相液滴在切向速度梯度影响下还受切向应力作用,使液滴破碎和乳化。依据给出的计算公式,可以计算各力的大小和方向,进而分析其对分离性能的影响。
Through the test and theoretical analysis of the velocity field of a liquid hydrocyclone, it is pointed out that the forces exerted by the dispersed droplets in the radial direction are mainly due to the centrifugal force generated by the tangential acceleration and the direction away from the axis; the radial pressure field is generated Of the radial force, the direction of which points to the axis; radial resistance to movement - Stokes force, the direction of the wall pointing; Magnus generated by the rotating flow field, the direction of the point in the outer vortex axis, in the Inner vortex area away from the axis. In addition, disperse phase droplets are also subjected to tangential stress under the influence of tangential velocity gradients, causing the droplets to break up and emulsify. According to the given calculation formula, the magnitude and direction of each force can be calculated, and then the influence on the separation performance can be analyzed.