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科学通报  2014 

数值分析螺杆槽道内气液两相流液相分布及压降特性

DOI: 10.1360/csb2014-59-28-29-2784, PP. 2784-2791

Keywords: 气液两相流,液相分布,压降,螺杆槽道

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Abstract:

主要利用数值模拟对螺杆槽道内气液两相流的液相分布和压降特性进行研究,数值模拟结果和已经取得的试验结果进行了对比,结果表明本文采用的数值模型具有很好的预测结果.数值模拟主要通过改变螺杆槽道的节圆直径、入口截面含液率以及流体运动速度,获得相应条件下的压降及液相分布特性.减小螺杆槽道节圆直径或者增加入口截面含液率可以增加外壁面的液相含量,同时引起压降的增加.根据数值模拟结果,并考虑螺杆节圆直径和流体入口含液率的影响,拟合得到螺杆槽道内气液两相流的摩擦压降计算关系式.

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