Validation of simple estimates for average field strengths in complex cavities against detailed results obtained from a 3D numerical model of a car
Validation of simple estimates for average field strengths in complex cavities against detailed results obtained from a 3D numerical model of a car
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根据汽车 3D 数值模型获得的详细结果，验证复杂腔体中平均场强的简单估计
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发表时间：
2008
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通讯作者：
A. Ruddle
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作者：
A. Ruddle
对汽车乘客舱平均电场和磁场强度的非常简单的估计与 3D 数值模拟获得的值进行比较。这些估计基于功率平衡方法，假设窗口电很大并且代表主要的损耗机制。还提出了一种在电动大窗户中包含简单玻璃效果的方法，并针对数值模型进行了验证。结果表明，对于 1-2 GHz 频段内的内部源，可以获得非常好的估计。这种方法预计对于更大的腔体和更高的频率会变得更加有效。这种性质的平均场估计可用于评估人类暴露于车辆和其他谐振环境电磁场的情况，这些环境因其电气尺寸而无法进行确定性建模。
Very simple estimates for average electric and magnetic field strengths over the passenger compartment of a car are compared with values obtained from 3D numerical simulations. The estimates are based on the power balance method, assuming that the windows are electrically large and represent the dominant loss mechanism. A method to include the effects of simple glazing in electrically large windows is also proposed and validated against numerical models. The results demonstrate that remarkably good estimates can be obtained for internal sources at frequencies in the band 1-2 GHz. This approach is expected to become more effective for larger cavities and higher frequencies. Average field estimates of this nature could be useful in the assessment of human exposure to electromagnetic fields for vehicles and other resonant environments that are not amenable to deterministic modelling because of their electrical size.