滑移界面位置对叶轮机械内部旋转流场的影响

为研究滑移界面位置对叶轮机械内部流体旋转流场的影响,选择了有定子和无定子二种典型的叶轮机械模型,使滑移界面位于转子和静止部件之间的不同位置,分别对其进行数值模拟,得到了叶轮机械内部旋转流场分布,并与实验结果和其他文献结果进行对比分析.结果表明:滑移界面越靠近转子,转子转动对四周区域流体的影响越小;滑移界面越靠近静止部件,转子转动对四周区域流体的影响越大;滑移界面位置应取在转子和静止部件之间靠近转子的1/8～1/4处.

Effects of Sliding Mesh Interface Position on Swirling Flow Fields in Impeller Machinery

To understand the influence of sliding mesh interface position on swirling flowing fields of impeller machinery, two kinds of typical computational models, namely, with stator and without stator, have been chosen to simulate the situation. The fluid velocity distributions in each impeller machinery model are obtained under different sliding mesh interface positions between rotor and stationary components. The results are compared with some experimental data and that of other literatures. It is shown that: the position of sliding mesh interface is closer to the rotor, the rotating of rotor have little effect on the surrounding fluid flow, while if it is closer to the stationary parts, the rotating of rotor have greater effect on the surrounding fluid flow. It suggests that the position of sliding mesh interface should be 1/8~1/4 close to the rotor of the interval between the rotor and stationary parts.