复杂环境中手机电磁辐射的比吸收率计算

doi:10.19665/j.issn1001-2400.2019.02.028

摘要/Abstract

摘要：

针对如何精确、高效地计算复杂环境中手机电磁辐射比吸收率的问题,开展了有限元区域分解方法及其对于非周期结构目标的求解方法研究。结合有限元区域分解与并行计算技术,给出了一种分析手机辐射情况下人体局部比吸收率的高效方法。通过计算复杂分层人头模型,与商业软件进行对比,验证了该方法的正确性与计算效率。最后,将这种方法应用于车载环境中人头局部比吸收率仿真分析中,有限元求解网格量突破1000万,表明了该方法的计算能力。

关键词: 有限元方法, 区域分解方法, 比吸收率, 手机辐射

Abstract:

Aiming at the problem how to accurately and efficiently calculate the specific absorption ratio (SAR) from the mobile phone electromagnetic radiations in complex environment, the finite element domain decomposition method (DDM) and its solution method for aperiodic targets are studied. By combining the finite element DDM with the parallel computing technology, an efficient method for analyzing the local SAR of the human body under mobile phone radiations is given. By calculating the complex hierarchical head model and comparing with commercial software, the correctness and computational efficiency of this method are verified. Finally, this method is applied to calculate the local SAR of the human head in vehicle environment, and the number of FEM meshes exceeds 10million, which shows the ability of the method.

Key words: finite element method, domain decomposition method, specific absorption ratio, mobile phone radiation

中图分类号:

TN820

左胜,白杨,张玉,赵勋旺,林中朝. 复杂环境中手机电磁辐射的比吸收率计算[J]. 西安电子科技大学学报, 2019, 46(2): 170-176.

ZUO Sheng,BAI Yang,ZHANG Yu,ZHAO Xunwang,LIN Zhongchao. Calculations of the specific absorption ratio from mobile phone electromagnetic radiations in complex environment[J]. Journal of Xidian University, 2019, 46(2): 170-176.

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计算方法	计算平台	计算资源	网格量	未知量	分区数目	迭代步数	内存使用峰值/GB	计算时间/s
商业软件HFSS			418760	2388323			44.9	2244
有限元整体解方法	计算平台Ⅰ	24 CPU核	552644	3545424			153.9	1227
有限元区域分解方法			552644	4028520	48	306	33.9	305