水力旋流器内固液两相间的相对运动(Ⅰ)-颗粒运动方程及其求解

来源期刊：中国有色金属学报1998年第3期

论文作者：徐继润 罗茜

文章页码：487 - 491

关键词：水力旋流器； 颗粒运动； BBO方程

Key words：hydrocyclones ； particle motion； BBO equation

摘    要：从BBO方程求解水力旋流器内颗粒与流体的相对运动是一项新的尝试。 通过求解BBO方程， 给出了描述水力旋流器内固体颗粒与流体介质相对运动的跟随性指标。结果表明，在忽略重力影响的前提下，颗粒在切向及轴向与流体具有相同的跟随特性； 而由于离心力的存在， 颗粒在径向的运动将明显有别于流体介质。 根据跟随性指标η， φ的数学表达式，可以定量地考察诸如颗粒性质、流体特性、空间位置、湍流频率等因素对颗粒运动的影响。

Abstract: A new approach to the relative motion of solid particles with fluid medium in hydrocyclones was presented. By resolving BBO equation , some parameters describing the lags between particles and medium was derived and analyzed. These parameters show that the relative motion in both tangential and vertical directions can be neglected if the gravity is not considered, but in the radial direction, the motion of particles is apparently different from that of the medium. According to the derived parameters, a series of factors including particle natures, space position, flow field characteristics as well as turbulence frequency may be investigated qualitatively, but the detail will be reported in t he following issues of the magazine.