Simulation Research of Pipeline Flow Field Based on UDF under Different Open Valves

摘要

Aiming at the manual ball valve in irrigation pump in industrial production pipeline, it is researched the flow characteristics of the valve and the pipeline under different way of opening valve. It is used user defined function (UDF) method and dynamic mesh technology of FLUENT software. Three valve opening states which are constant acceleration, constant velocity and constant deceleration are designed, and the valve opening rule of two-dimensional model for dynamic condition is simulated. The results show that the impact of constant acceleration rule of opening valve is smaller; its flow field is relatively stable; and it has less impact on the after the components of the pipeline.