CAJ | 학술논문

科里奥利力是在旋转坐标系中由于物体相对于旋转坐标系运动所产生的一种惯性力，简称科氏力。水力旋流器的内部流场是高速旋转的离心分离流场。本研究采用计算流体力学方法模拟水力旋流器内高浓度分散相的分布，对颗粒受到的科氏力进行分析。RSM模型用于描述流场的湍动特性，LPT 模型对颗粒相的运动进行追踪，模拟结果与试验数据的吻合性较好。结果表明，在水力旋流器内，由于锥体段的湍流强度较高，科氏力的方向具有较强的随机性。在切向方向，随粒径增大，曳力和压力梯度力递减而科氏力递增，当粒径增大到52μm 时，科氏力的量级与曳力相当，此时科氏力的作用是不可忽略的。
과리오리력시재선전좌표계중유우물체상대우선전좌표계운동소산생적일충관성력，간칭과씨력。수력선류기적내부류장시고속선전적리심분리류장。본연구채용계산류체역학방법모의수력선류기내고농도분산상적분포，대과립수도적과씨력진행분석。RSM모형용우묘술류장적단동특성，LPT 모형대과립상적운동진행추종，모의결과여시험수거적문합성교호。결과표명，재수력선류기내，유우추체단적단류강도교고，과씨력적방향구유교강적수궤성。재절향방향，수립경증대，예력화압력제도력체감이과씨력체증，당립경증대도52μm 시，과씨력적량급여예력상당，차시과씨력적작용시불가홀략적。
Coriolis force is an inertial force generated due to the movement of the object relative to the rotating coordinate sys-tem.There is a high-speed rotating centrifugal field in the hydrocyclone.This paper mainly used computational fluid dynamics method to study the Coriolis force that acts on the particles.Turbulence was simulated by Reynolds stress model and Stochastic Lagrangian Particle Tracking model was applied to predict the motion of these particles.Simulated results were in agreement with the reported experimental data.In the conical section of hydrocyclone,the strong randomness of the direction of Coriolis force can be found which is probably due to the high turbulence intensity.In the tangential direction,the Coriolis force goes up and the drag force and pressure gradient force decreaseswith the increase of particle diameter.When the particle diameter reaches 52μm in the case,the magnitude of Coriolis force is matched with drag force.The effect of Coriolisforce cannot be ignored.