论文部分内容阅读
采用MRF模型和力矩平衡法数值模拟了内插转子的管内流动,比较了内插叶片型转子和直线型转子后的速度场、流阻及其机械能耗散。结果表明,固液接触面积过大和转子转速过快是导致内插叶片型转子阻力增加较大的主要原因。与叶片型转子相比,直线型转子的特殊结构使固液接触面积减小、转速降低,因此,流阻的增幅显著减小。同时转子的转动可增强壁面处的扰动,增大壁面处流体速度梯度,使其具有一定的强化换热和除垢抑垢能力。
The MRF model and torque balance method are used to numerically simulate the flow in the rotor of the interpolator. The velocity field, flow resistance and mechanical energy dissipation of the interpolated rotor and linear rotor are compared. The results show that the main reason for the increase of the resistance of the insert vane rotor is that the solid-liquid contact area is too large and the rotor speed is too fast. Compared with the vane type rotor, the special structure of the linear type rotor reduces the solid-liquid contact area and the rotation speed, so the increase of flow resistance is significantly reduced. At the same time, the rotation of the rotor can enhance the disturbance at the wall surface and increase the fluid velocity gradient at the wall so that it has certain heat transfer enhancement and scale removal and scale inhibition capability.