Chinese Journal of Ship Research, Volume. 18, Issue 4, 84(2023)
Time-domain shielding effectiveness analysis based on DGTD method
Figures & Tables(27)
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Table 1. The number of mesh elements and time step for three LTS zones
View tableView in ArticleTable 1. The number of mesh elements and time step for three LTS zones
单元数量 $ \Delta {t_i} $ $ {m_i} $ LTS区域1 28 783 4.5×10−13 1 LTS区域2 42 921 1.8×10−12 4 LTS区域3 55 929 7.2×10−12 16
Table 2. CPU time comparison of different methods
View tableView in ArticleTable 2. CPU time comparison of different methods
方法 耗时/min 串行DGTD 419.5 并行DGTD 42.7 并行LTS-DGTD 17.1
Table 3. CPU time and parallel efficiency of LTS-DGTD
View tableView in ArticleTable 3. CPU time and parallel efficiency of LTS-DGTD
核数 CPU时间/h 并行效率/% 4 22.8 100 8 12.5 91.2 16 6.4 89.1 32 3.4 83.8 48 2.6 73.1
Table 4. Effect of metallic enclosure thickness on TDSE
View tableView in ArticleTable 4. Effect of metallic enclosure thickness on TDSE
腔体厚度δ/cm Ey最大幅值/(V∙m−1) TDSE/dB 6 0.72 2.85 8 0.58 4.73 10 0.45 6.93
Table 5. Effect of short side length of rectangular aperture on TDSE
View tableView in ArticleTable 5. Effect of short side length of rectangular aperture on TDSE
短边边长b/cm Ey最大幅值/(V∙m−1) TDSE/dB 5 0.42 7.53 10 0.63 4.01 15 0.79 2.04
Table 6. Effect of long side length of rectangular aperture on TDSE
View tableView in ArticleTable 6. Effect of long side length of rectangular aperture on TDSE
长边边长a/cm Ey最大幅值/(V∙m−1) TDSE/dB 20 0.10 20.00 35 1.00 0 50 1.59 -4.02 65 0.92 0.72 80 0.78 2.15
Table 7. Effect of spacing of aperture array elements on TDSE
View tableView in ArticleTable 7. Effect of spacing of aperture array elements on TDSE
孔阵列间距d/cm Ey最大幅值/(V∙m−1) TDSE/dB 2 0.88 1.11 6 0.53 5.51 10 0.39 8.17
Table 8. Effect of the number of aperture array elements on TDSE
View tableView in ArticleTable 8. Effect of the number of aperture array elements on TDSE
孔阵列单元数 Ey最大幅值/(V∙m−1) TDSE/dB 1×1 0.51 5.85 2×2 0.14 17.07 3×3 0.07 23.09
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Zhenglang JIA, Xinyi LIU, Huanhuan ZHANG, Weijun WU, Li TAO. Time-domain shielding effectiveness analysis based on DGTD method[J]. Chinese Journal of Ship Research, 2023, 18(4): 84
Paper Information
Category: Electromagnetic environment and electromagnetic safety
Received: Oct. 21, 2022
Accepted: --
Published Online: Mar. 20, 2025
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