摘要
针对盘式永磁调速器水冷过程中存在散热不充分,导致永磁调速器性能下降的问题。在以往磁热耦合和多参考坐标系的数值计算建模方法上,进一步引入流体体积两相流模型,建立了盘式永磁调速器水冷两相流散热数值计算模型。经过与实验对比,验证了该数值计算模型的准确性,并通过数值计算结果,分析了冷却水流量和主要结构对其散热效果的影响。研究表明:数值计算结果与实验吻合较好,计算结果与实验最大误差小于4.5%。增大冷却水流量可提高散热效果,在25 t/h时铜盘平均温和最高温约为75℃和87℃,继续增加流量对散热性能无提升。在冷却水流量9 t/h时,控制出口数量和出口面积变化,对散热效果影响显著、出口数量为5、截面面积为475 mm^(2)时,散热效果达到最佳。增加中间孔数量可有效改善散热效果,当中间孔数量增加至36个后,继续增加中间孔数量对铜盘最高温无明显影响。研究结果为盘式水冷永磁调速器散热结构设计提供了理论支持,具有一定工程价值。
Addressing the issue of inadequate heat dissipation during the water cooling process of disc-type permanent magnet couplers,which leads to performance degradation.Building upon previous numerical modeling methods involving magneto-thermal coupling and multi-reference coordinate systems,a two-phase flow cooling numerical model for disc-type permanent magnet couplers is established by introducing the Volume of Fluid(VOF)two-phase flow model.The accuracy of the numerical model is verified through comparison with experimental data,and the effects of cooling water flow rate and primary structure on heat dissipation are analyzed based on numerical results.The research indicates that the numerical results align well with experimental findings,with a maximum error of less than 4.5%.Increasing the cooling water flow rate enhances heat dissipation,with the copper disc’s average and maximum temperatures reaching approximately 75℃and 87℃at a flow rate of 25 t/h,respectively;further flow rate increases do not improve cooling performance.At a cooling water flow rate of 9 t/h,adjusting the number and area of outlets significantly impacts heat dissipation.Optimal heat dissipation is achieved with 5 outlets and a cross-sectional area of 475 mm^(2).Increasing the number of intermediate holes can effectively improve heat dissipation,but after reaching 36 holes,further additions have no notable effect on reducing the copper disc’s maximum temperature.This study provides theoretical support for the design of the cooling structure of disc-type water-cooled permanent magnet couplers and holds practical engineering value.
作者
刘显茜
刘禹
韩以强
谭波
LIU Xianxi;LIU Yu;HAN Yiqiang;TAN Bo(Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,China)
出处
《兵器装备工程学报》
北大核心
2025年第8期126-134,共9页
Journal of Ordnance Equipment Engineering
基金
国家自然科学基金项目(51566006)。
关键词
永磁调速器
两相流
数值模拟
水冷散热
流体体积模型
permanent magnet speed regulator
two-phase flow
numerical simulation
water-cooled heat dissipation
volume of fluid
