Numerical Simulation of Retrofit Scheme of a Boiler Tail Flue  

作　　者：Yukun Lv Jiaxi Yang Jiawen Wang Runcheng Zhang Shuang Yang Wentao Li 

机构地区：[1]North China Electric Power University,Baoding,071003,China

出　　处：《Fluid Dynamics & Materials Processing》2020年第6期137-151,共15页流体力学与材料加工（英文）

摘　　要：Aiming at the problem that the total pressure loss of the flue of the electric precipitator of the 350 MW unit of a power plant to the inlet of the draft fan is too large,the numerical simulation software Fluent and the standard k-εmodel was used to simulate the flue,the results show that the main part of the flue mean total pressure loss is derived from the confluence header and elbow.In order to reduce the loss and consider the cost of transformation,the concept of twodimensional feature surface is established,gradually proposed three sets of flue transformation program and analysis of the flue transformation program drag reduction effect,the results show that the total reduction of the flue can be reduced from 486 Pa to 89 Pa and the reduction rate is 81.7%,which is the best solution;The concept of two-dimensional feature plane is helpful for quick condensing of flue;Double V-type structure of the convergence of the box has a better drag reduction effect.

关 键 词：FLUE numerical simulation total pressure loss two-dimensional feature surface transformation program 

分 类 号：G63[文化科学—教育学]