沉降离心机圆形转鼓内液面速率的数值模拟

Numerical simulation of the velocity of the fluid surface in the bowl of a sedimentation centrifuge

沉降离心机的生产能力取决于流体的轴向速率和周向速率,因此对沉降离心机转鼓内流体速度的研究有助于沉降离心机的结构优化设计。本文对沉降离心机圆形转鼓内流体速度进行了数值模拟,研究发现自由液面周向速率滞后随流量和液池深度增大而增大,自由液面轴向速率受流量、液池深度和转鼓转速的影响,并给出了它们之间的关系式。

The throughput of a sedimentation centrifuge depends on both.angular velocity and axial velocity. A numerical study of the fluid velocity in the bowl of a sedimentation centrifuge has been carried out in order to assist in optimizing the design of the ceatrifuge. It was shown that the angular velocity lag of the fluid surface increased with the flow rate and depth of the liquid, and that the axial velocity was a function of the flow rate, depth of liquid and the angular velocity of the bowl. A correlation for calculation of the axial velocity was also derived after detailed parameter analysis.