二维电磁场-流体-温度场耦合仿真节点数据映射算法研究

doi:10.19595/j.cnki.1000-6753.tces.161073

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摘要在二维电磁场-流体-温度场耦合分析中,针对电磁场计算域与流体-温度场仿真域网格不匹配的情况,需要引入异构网格节点数据映射算法来实现数据的传递。为将电磁场损耗准确映射到流体-温度场的相关网格单元和节点上,提出快速映射法和径向基函数法,并结合两种方法的优点提出异构网格节点数据映射的混合算法。结合具有解析解的算例和换流变压器铁心漏磁场映射的实例,验证三种算法的可行性;讨论网格疏密对映射算法精度的影响;分析比较径向基函数法、快速映射法和混合算法的映射精度,并从计算效率方面对径向基函数法和快速映射法进行对比。结果表明：快速映射法、径向基函数法和混合算法各具优缺点,对不同算例,需要根据其模型和网格特点选择适当的映射算法,以满足精度要求,为二维电磁场-流体-温度场耦合仿真奠定了基础。

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关键词 ：数据映射, 快速映射法, 径向基函数法, 混合算法

Abstract：In the analysis of the 2D coupling electromagnetic-fluid-thermal fields, which the meshes in electromagnetic domain don't match the meshes in the fluid-thermal domain, the mapping method of the node data need to be studied. In order to map electromagnetic losses to fluid-thermal field accurately, this paper proposed the fast projection algorithm and the radial basis function (RBF) scheme, and presented the mixed method combing the advantages of the two proposed methods. Based on the examples with analytical solutions and the leakage magnetic field mapping of a converter transformer, the feasibility of the three methods were verified, the effects of the grid density on the mapping algorithm accuracy was discussed, the mapping accuracy of the three methods were compared, and the computational efficiency of the fast projection algorithm and the RBF schemes were studied. The result shows that three methods have advantages and disadvantages. For different applications, it is necessary to choose a proper mapping algorithm according to the model and grid features. Above research lay a foundation for the 2D coupling electromagnetic-fluid-thermal fields.

Key words： Data mapping fast projection algorithm radial basis function mixed method

收稿日期: 2016-07-11 出版日期: 2018-01-16

PACS:

TM401

基金资助:国家自然科学基金（51407075）、河北省自然科学基金（E2015502004）和中央高校基本科研业务费专项资金（2015MS79）资助项目

作者简介: 刘刚男,1985年生,讲师,研究方向为电磁场理论及其应用、电气设备多物理场建模及仿真。E-mail：liugang_em@163.com（通信作者）张瀚方女,1991年生,助理工程师,研究方向为电力系统继电保护。E-mail：Zhanghanfang@epri.sgcc.com.cn

引用本文:

刘刚, 张瀚方, 池骋, 李琳, 李慧奇. 二维电磁场-流体-温度场耦合仿真节点数据映射算法研究[J]. 电工技术学报, 2018, 33(1): 148-157. Liu Gang, Zhang Hanfang, Chi Cheng, Li Lin, Li Huiqi. Research on Node Data Mapping Algorithm for the 2D Coupling Electromagnetic-Fluid-Thermal Fields. Transactions of China Electrotechnical Society, 2018, 33(1): 148-157.

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