布液装置影响降膜特性的三维数值模拟
作者:段林林,高虹,郭玉君,杨晓宏,田瑞
单位: (内蒙古工业大学能源与动力工程学院,内蒙古 呼和浩特市 010051)
关键词: 布液装置;三维数值模拟;液膜厚度;铺展长度
出版年,卷(期):页码: 2017,37(2):60-64

摘要:
 对不同孔间距的布液装置影响水平管降膜特性进行了Fluent三维数值模拟研究,通过VOF方法追踪气液交界自由表面,分析了管外液膜的轴向铺展长度、周向角度的液膜厚度分布。结果表明:Re=322布液器孔间距s=8mm时,管外液膜轴向铺展均匀;s=15mm时液膜对应的轴向铺展距离的平均值为8.31mm;z1=50%Z时s=8mm液膜厚度最小。根据液膜轴向铺展和周向厚度分布的结果,综合考虑,布液孔间距采用8mm为宜。
 Three-dimensional numerical simulation of horizontal tube falling film characteristics were carried out on liquid distributors with different hole spacing. VOF method was used to track the free surface of gas-liquid interface.The axial spreading length of liquid film outside the tube、the distributions of film thickness at different circumferential angles were analyzed. Results show that Re=322, axial liquid film spread evenly when liquid distributor hole spacing s = 8mm; the corresponding axial spreading average distance of liquid film is 8.31mm When s = 15mm; liquid film thickness is the smallest when z1 = 50% Z 、s = 8mm. According to the results of liquid film axial spreading and circumferential thickness distribution, it is advisable to adopt 8mm spacing between liquid holes.
第一作者简介:段林林(1987-),硕士研究生,主要研究传热传质。通讯作者,E-mail: 1505071310@qq.com

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