%0 Journal Article
%T T型管内两相流分配特性数值模拟<br>The numerical simulation of two-phase flow distribution characteristics in T-tube
%A 王丹华
%A 张冠敏
%A 冷学礼
%A 徐梦娜
%A 韩圆圆&lt
%A br&gt
%A WANG Danhua
%A ZHANG Guanmin
%A LENG Xueli
%A XU Mengna
%A HAN Yuanyuan
%J 山东大学学报（工学版）
%D 2018
%R 10.6040/j.issn.1672-3961.0.2017.057
%X 摘要： T型管内气液两相流分配不均易导致换热器偏流和受热不均。为了优化T型管内气液两相流流动,以FLUENT为模拟软件,以流体流动参数和管子几何结构为研究变量,对T型管内流体流动进行数值模拟。发现流体入口液相体积分数越大,入口速度越小,液滴粒径越小,越利于流体均布;同时支管衔接处采取弯管结构较直管结构优越,其中入口速度对流体分布影响最明显,速度相差3个数值即可优化两个出口液相体积分数比差10%左右。结果表明,相应改变流体流动参数和管子几何结构能有效优化T型管内流体流动。<br>Abstract: Uneven distribution of gas-liquid two-phase flow in T-tube was easy to cause bias flow and uneven heating in heat exchangers. To optimize the gas-liquid two-phase flow in T-tube, the simulation about influences of flow parameters and tubes geometric structure on distribution of two-phase flow characteristics in T-tube was carried out by FLUENT. It was found that higher volume fraction of liquid phase and slower inlet velocity, and a smaller diameter of liquid drops facilitate even distribution of fluid. Meanwhile, the elbow structure was better than a straight tube at joints of branch tubes, the inlet velocity had most obvious influence on flow distribution, the difference of three units in speed could result in around 10% variation in volume fraction ration between two outlets. The results showed that change the flow parameters and tubes geometric structure correspond could optimize fluid flow in T-tube effectively
%K 流动参数
%K 流体均布
%K 气液两相流
%K 数值模拟
%K 几何结构
%K &lt
%K br&gt
%K uniform fluid distribution
%K flow parameters
%K geometric structure
%K numerical simulation
%K gas-liquid two-phase flow
%U http://gxbwk.njournal.sdu.edu.cn/CN/10.6040/j.issn.1672-3961.0.2017.057