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.