Analysis of Water Filling Characteristics of Pipeline Under Different Inclination
Aiming at the problem of long period of pipeline water filling,on the basis of comparing the coincidence degree between simulation data and experimental data,pipeline three-dimensional models with five kinds of different incli-nation angles were established to simulate the process of pipeline water filling.The changes of internal velocity,pressure and gas-liquid two-phase distribution were analyzed.The results show that when the inclination of the pipeline is less than 30°,the flow pattern is stable,the streamline is uniform,the water level in the pipe rises uniformly,and the average fill-ing velocity is 1.3 m/s.With the increase of inclination,the velocity becomes faster and faster,and the phenomenon of gas-liquid two-phase mixed flow is more and more obvious.When the inclination angle is 60°,there is a phenomenon of gas congestion in the pipeline.Based on the comprehensive comparison,it is suggested that the filling speed of the pipe-line can be increased and the filling period can be shortened when the inclination is less than 30°.
pipeline water fillingwater-air two-phase flowthree-dimensional numerical simulationinclined pipeline
万方数据
维普
