Analysis of Flow Field Dynamic Characteristics of Friction Pair Fluid-Film for Heat Pump Mechanical Seal

摘要

The gap of the friction pair interface is tiny for the heat pump mechanical seal with the high parameters working condition, and the dynamic characteristics of the fluid-film flow field couldn't be come true easily when using the traditional experimental test. In this paper, the 3D FEM model of the fluid-film between the surfaces of the static and dynamic ring is set up, and then the dynamic characteristics of the fluid-film flow field were simulated by the computational fluid dynamics (CFD) theory and method. The pressure and the carrying capacity of the fluid-film were gotten; the results of the analysis were compared with the theoretical values to get a better agreement. Then based on this model, the impact laws of the different pressure and the width on the pressure and capacity of the fluid-film were further studied, the results provide a useful reference for the design of heat pump mechanical seal.