四轨电磁发射器的背场增强仿真分析
Simulation analysis of background field enhancement of four-rail electromagnetic launcher
1 空军工程大学 防空反导学院,西安 710051
2 中国科学院 电工研究所,北京 100190
图 & 表
图 1. 背场下四轨电磁发射器的工作原理图
Fig. 1. Working principle diagram of a four-rail electromagnetic launcher in the background field
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图 2. 模型四分之一截面示意图
Fig. 2. Schematic diagram of model’s quarter section
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图 3. 电流密度分布
Fig. 3. Current density distribution
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图 4. 不同主轨道间距下最大电流密度
Fig. 4. Maximum current density at different main orbital spacing
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图 5. 附轨道截面积对电感梯度和最大电流密度的影响
Fig. 5. Influence of the cross-sectional area of the additional rail on the inductance gradient and maximum current density
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图 6. 三种不同的附轨道截面形状
Fig. 6. Three different additional rail section shapes
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图 7. 不同分段方式下附轨道的四分之一截面示意图
Fig. 7. Schematic diagram of a quarter section of the additional rail under different segmental modes
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图 8. 分段方式对电感梯度的影响
Fig. 8. Effect of segmented mode on inductance gradient
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表 1不同主轨道间距下电感梯度
Table1. Inductance gradients under different main rail spacing
spacing/mm | prototype/(µH·m−1)
| | background field/(µH·m−1)
| Maxwell’s | COMSOL’s | Maxwell’s | COMSOL’s | 25 | 0.72363 | 0.74873 | | 1.28442 | 1.3455 | 30 | 0.87762 | 0.85420 | | 1.60369 | 1.5579 | 35 | 1.0041 | 0.94764 | | 1.90189 | 1.75 | 40 | 1.114346 | 1.03030 | | 2.14893 | 1.925 | 45 | 1.221838 | 1.10470 | | 2.37343 | 2.0821 |
|
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表 2不同主附轨道间距下电感梯度
Table2. Inductance gradients under different main and additional rail spacing
main and additional rail spacing/mm | Maxwell’s solution/(µH·m−1)
| COMSOL’s solution/(µH·m−1)
| 2 | 1.5746 | 1.6911 | 4 | 1.47618 | 1.5831 | 6 | 1.39424 | 1.4913 | 8 | 1.32861 | 1.413 | 10 | 1.28442 | 1.3455 |
|
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表 3不同附轨道厚度下电感梯度
Table3. Inductance gradients under different additional rail thicknesses
additional rail
thickness/mm
| Maxwell’s solution/
(µH·m−1)
| COMSOL’s solution/
(µH·m−1)
| Maximum current density/
(109A·m−2)
| 4 | 1.38708 | 1.4409 | 2.0946 | 6 | 1.34843 | 1.406 | 2.0935 | 8 | 1.32368 | 1.3746 | 2.0922 | 10 | 1.28442 | 1.3455 | 2.0286 | 12 | 1.25154 | 1.3199 | 2.0713 |
|
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表 4不同附轨道高度下电感梯度
Table4. Inductance gradients at different additional rail heights
additional rail
altitude/(mm)
| Maxwell’s solution/
(µH·m−1)
| COMSOL’s solution/
(µH·m−1)
| Maximum current density/
(109A·m−2)
| 10 | 1.35489 | 1.3775 | 2.1054 | 15 | 1.30642 | 1.3641 | 2.0103 | 20 | 1.28442 | 1.3455 | 2.0286 | 25 | 1.27027 | 1.3249 | 1.9191 | 30 | 1.19722 | 1.2998 | 1.7920 |
|
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表 5不同截面形状下电感梯度与电流密度
Table5. Inductance gradient and current density under different section shapes
cross section
shape
| self inductance
gradient/(µH·m−1)
| mutual inductance
gradient/(µH·m−1)
| system inductance
gradient/(µH·m−1)
| maximum current
density/(109A·m−2)
| rectangular | 2.13226 | −0.42392 | 1.28442 | 2.0286 | convex | 2.12950 | −0.32325 | 1.48300 | 1.9780 | concave | 2.27081 | −0.45296 | 1.36489 | 1.8741 |
|
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连仲谋, 冯刚, 童思远, 程军胜, 熊玲. 四轨电磁发射器的背场增强仿真分析[J]. 强激光与粒子束, 2020, 32(10): 105003. Zhongmou Lian, Gang Feng, Siyuan Tong, Junsheng Cheng, Ling Xiong. Simulation analysis of background field enhancement of four-rail electromagnetic launcher[J]. High Power Laser and Particle Beams, 2020, 32(10): 105003.