The coagulation technology of bipolar charged - turbulence can improve the PM2. 5 removal efficiency of ESP effectively. The turbulence produced by vortex column is the main power supply in the turbulence coagula-tion device. Cylinder and different angles semi - cylinder disturbed flow conditions are calculated respectively with k - epsilon model,by comparing the flow field parameters of average,show that,the smal er round an-gle,the better of turbulence effect and the greater of the resistance.%双极荷电-湍流凝聚技术可以有效提高常规电除尘器的 PM2.5脱除效率，是国内外研究的热点技术。扰流柱扰流作用是凝聚器内超细颗粒物凝聚的主要动力源之一，利用 k -ε模型分别计算圆柱及不同角度半圆柱扰流工况，经比较各流场参数的时均值，表明半圆角度越小，湍流效果越好，但阻力也越大。
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