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首页> 外文会议>International Conference on Applied Computational Fluid Dynamics October 17-20, 2000 Beijing China >Nmerical simulation of flow field in dual-impeller stirred tank
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Nmerical simulation of flow field in dual-impeller stirred tank

机译：双叶轮搅拌槽内流场的数值模拟

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摘要

In this paper, a two-equation turbulence model (k- epsilon ) is employed to investigated the turbulent flow field in a stirred vessel agitated by dual propeller-style impeller. The simulation results show that the flow in front of baffles is different from the flow behind baffles in low impeller clearnace case. In front of baffles, only one circulation loop has formed, and the flow pattern is approximately the same. Behind baffles, a small second recirculation loop has formed in the upper part of the vessel, and is directed downwards rather than upwards. With increasing impeller clearnace, fluid flow were more axial oriented between two impellers, only one primary recirculation loop was observed between baffles.
机译：本文采用二方程湍流模型（kεε）研究双螺旋桨式叶轮搅拌的搅拌容器中的湍流场。仿真结果表明，在低叶轮间隙情况下，挡板前部的流动与挡板后部的流动不同。在折流板的前面，仅形成了一个循环回路，流动方式大致相同。在折流板后面，在容器的上部形成了一个小的第二再循环回路，其指向下方而不是上方。随着叶轮间隙的增加，两个叶轮之间的流体流动更加轴向定向，在挡板之间仅观察到一个主再循环回路。

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