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Flow Evaluation of the Lobe Pump Using Numerical Methods

机译：用数值方法评估叶片泵的流量

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In this scientific paper, numerical simulations were performed to determine the performance of a lobe pump. The analyzes were made using CFD commercial software Ansys CFX. Using the URANS method with the SST turbulence model, the system of equations governing the flow of fluid through the lobe pump has been solved. The system of equations is represented by the Navier-Stokes equations composed of the continuity, impulse and energy equations. Considering that this type of machine is a positive displacement volumetric machine for defining the computational domain for rotating parts, the TwinMesh software were used which can make structured grids for different rotor positions. Thus, two cases where examined in which the discharge pressure was imposed. In the first case the discharge absolute pressure were 1,5 bars and for the second case the absolute pressure at the outlet were 1,7 bars. The investigation resulted in the following findings: the mass flow variations on a complete rotation and the recirculation regions with the flow detachments imposed by the positions of the two rotors.
机译：在这篇科学论文中，进行了数值模拟以确定叶片泵的性能。使用CFD商业软件Ansys CFX进行分析。使用带有SST湍流模型的URANS方法，已经解决了控制流体通过叶片泵流动的方程组。方程组由由连续性，脉冲和能量方程组成的Navier-Stokes方程表示。考虑到这种类型的机器是用于定义旋转零件的计算域的正位移容积式机器，因此使用了TwinMesh软件，该软件可以为不同的转子位置制作结构化的网格。因此，检查了施加排出压力的两种情况。在第一种情况下，排出的绝对压力为1.5 bar，第二种情况下，出口的绝对压力为1.7 bar。研究得出以下发现：在完全旋转时，质量流量发生变化;在两个转子的位置引起流动分离的情况下，出现了回流区域。

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