Abstract:

Using the multiphase flow mixture model under the laminar flowing condition,the mixing performance of two kinds of similar fluids in the multi-channel spiral static mixer was studied.The conclusion indicates that more channels can improve the mixing velocity of the fluids,and reduce the required mixing element length to achieve the same mixing effect,but it can increase the system energy consumption at the same time.Under the condition of the same mixing element length,it should be preferred the spiral static mixer with two channels from the view point of energy consumption.For the reason that the mixer space is small and mixing element length should be short,it should be preferred the spiral static mixer with four channels.

Key words: static mixer, numerical simulation, dispersive mixing, intensity of segregation

摘要：

采用多相流混合模型对层流状态下两种物性接近的流体在多流道螺旋静态混合器内的混合性能进行研究。研究结果表明,流道数增多提高了流体混合速度，缩短了达到相同混合效果所需要的混合元件长度,但同时也增大了系统能量消耗。在混合元件长度要求较长的情况下，从能量消耗角度应优先选用两通道螺旋静态混合
器，而受到设备空间限制等原因混合元件长度需要较短时，应优先选用四通道螺旋静态混合器。

关键词: 静态混合器, 数值模拟, 分布混合, 分离强度