Численное моделирование течения жидкости в щелевом уплотнении

Abstract

Seal gaps are essential components of rotating machinery and are widely used to restrict or control the flow of fluids between adjacent chambers that are at different pressure levels. They involve the flow in an annulus between two components: shaft of the rotor (diameter, D) which is rotating at a speed of ω (the whirling may include an eccentricity) and the outer stator that is generally static and fixed to the support structure. This paper presents a numerical method using ANSYS CFX to calculate the leakage flow for turbulent mode and calculation of the semi-empirical coefficient K that is also compared with previous experimental values.