基于Fluent流体传热仿真的毛细管风道设计优化  

Optimization of air duct design of a capillary column based on Fluent fluid heat transfer simulation

作　　者：沈燃 郑利俊 樊伟东 荣雅文 邓然 骆志成 黄俊[1] SHEN Ran;ZHENG Lijun;FAN Weidong;RONG Yawen;DENG Ran;LUO Zhicheng;HUANG Jun(School of Biological and Chemical Engineering,Zhejiang University of Science and Technology,Hangzhou 310023,China;Hangzhou Allsheng Instrument Co.Ltd.,Hangzhou 310012,China)

机构地区：[1]浙江科技学院生物与化学工程学院,浙江杭州310023 [2]杭州奥盛仪器有限公司,浙江杭州310012

出　　处：《高校化学工程学报》2024年第3期414-421,共8页Journal of Chemical Engineering of Chinese Universities

基　　金：国家重点研发计划(2021YFF0600805);浙江省“高层次人才特殊支持计划”(2022R52024)。

摘　　要：针对毛细管冷却风道内分离段毛细管柱轴向散热不均匀问题,设计一种变截面送风道。利用Fluent仿真软件对风道设计过程进行建模和数值模拟,优化改进风道冲击角、出入口形状与风道长度尺寸等参数,并通过对风道出风口风速与风道内柱面温度的实测验证设计的可靠性。结果表明:毛细管冷却风道经优化后,出风口的风速更加均匀,柱面轴向温差减小,温度均匀性得到改善。仿真结果较好地拟合了实验结果,4个出风口的风速在10.38~10.67m·s^(-1),柱面温差缩小至±1℃以内。优化后的毛细管冷却风道设计对提升分离段冷却效率具有指导意义。This study aims to address the problem of uneven axial heat dissipation in separated sections of capillary column cooling ducts.A variable-section air supply duct was designed.The Fluent simulation software was utilized to model and numerically simulate the duct design,enabling the optimization of various parameters including duct impact angle,inlet and outlet shape,and duct length dimensions.The reliability of the design was validated through measurements of the air velocity at the duct outlet and the temperature at the column surface inside the duct.The results indicate that the optimized capillary cooling duct achieves a more uniform air velocity at the outlet,resulting in a reduced axial temperature difference and a significant improvement in temperature control.The experimental test results closely align with that of simulations,which confirms that the average air velocity at four outlets ranges from 10.38 to 10.67 m×s^(-1),and the temperature difference along the column surface is reduced within±1℃.The optimized design of the capillary cooling duct has great guiding significance in enhancing cooling efficiency and addressing poor uniformity in separation section.

关 键 词：风道设计 毛细管 对流传热 Fluent仿真 

分 类 号：TQ151.7[化学工程—电化学工业]