| Abstract:In order to improve the production of pulp pressure screen, CFD （Computational Fluid Dynamics） was used to simulate the flow field around the screen drum bar. This paper compares the changes of flow field pressure, turbulence kinetic energy and velocity nephogram, which were caused by the change of the shape of the pressure screen drum bars. The results verified that when the bars shape changed, the position and size of the eddy current also changed. Furthermore, when the work condition and structures （other than bar） remained unchanged, the change of the shape of bars would cause changes in the export flow, which indicated that the width of the bar AB had influence on the flow field around the export of screen drum, furthermore, there was an optimal value of the width of AB． |
