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首页> 外文会议>2014 Intemational Conference of Lighbling Protection >Analysis of the effect on the large floating roof oil tanks struck by indirect lightning based on FDTD
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Analysis of the effect on the large floating roof oil tanks struck by indirect lightning based on FDTD

机译：基于FDTD的间接雷击对大型浮顶油罐的影响分析

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According to the statistical data, lightning strike is the major cause of the large floating oil tanks ignition. The accident is usually caused by the direct and indirect lightning stroke. The effects of direct lightning stroke on floating oil tank have been studied a lot in previous works and there is little research on the influence of lightning stroke in the vicinity of tank. In order to study the indirect effect of lightning on the floating roof oil tanks, this paper proposes a numerical procedure based on finite difference time domain(FDTD) method to compute the electric potential distribution on the large floating oil tanks. The impact of lightning current amplitude, stoke position and soil resistivity on the potential distribution are taken into consideration. From the result, we can conclude that the field strength gets higher with the lightning current amplitude and the soil resistivity increases; decays with the distance further between the stoke point and the oil tank. Besides we calculate the lightning discharge radiation power.
机译：根据统计数据，雷击是大型浮油箱着火的主要原因。事故通常是由直接和间接雷击引起的。在以前的工作中已经研究了直接雷击对浮动油箱的影响，而关于油箱附近的雷击影响的研究很少。为了研究雷电对浮顶油箱的间接影响，提出了一种基于时差有限域法（FDTD）的数值程序，计算了大型浮油箱上的电位分布。考虑了雷电流幅度，行程位置和土壤电阻率对电势分布的影响。由结果可知，场强随雷电流幅度的增大而增大，土壤电阻率增大。行程点与油箱之间的距离越远，衰减越大。此外，我们还计算了雷电辐射的辐射功率。

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