Effects of circuit inductance on electrical and shock wave characteristics at underwater wire explosion
Effects of circuit inductance on electrical and shock wave characteristics at underwater wire explosion
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DOI：
10.1088/1361-6463/ab747d
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发表时间：
2020-03
期刊：
影响因子：
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通讯作者：
Guofeng Yin;H. Shi;Yunfei Fan;Jian Wu;Xingwen Li;A. Qiu
中科院分区：
文献类型：
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作者：
Guofeng Yin;H. Shi;Yunfei Fan;Jian Wu;Xingwen Li;A. Qiu
电路电感是水下电线爆炸实验中的一个重要参数，它与负载电线的能量沉积速率密切相关。本研究通过插入电感线圈，在1.55 μH ~ 93.2 μH范围内改变电路电感，研究其对UEWE电特性和激波特性的影响。实验结果表明，采用较细导线的uewe受电路电感增加的影响较小，在距离导线数cm处的SW峰值压力对电路电感的增加不敏感；当电路电感从1.55 μH （0.3 mm直径，19 MPa）增加到93.2 μH (0.2 mm直径，13 MPa) 60倍时，不同直径（恒定储能和导线长度）下的最大SW峰压仅下降30%。用流体力学计算来解释实验结果。这些结果表明，对于一个实际的UEWE系统，储能可以远离负载，同时保持可接受的产生强SWs的能力损失，这大大提高了系统设计的灵活性，例如在某些恶劣的工作环境中实现更大的储能。
Circuit inductance is an important parameter at underwater electrical wire explosion (UEWE) experiments as it closely relates to the energy deposition rate to the load wire. In this study, the circuit inductance was varied within a wide range from 1.55 μH to 93.2 μH by inserting inductive coils to study its effects on electrical and shock wave (SW) characteristics at UEWE. Experimental results showed that UEWEs using thinner wires were less affected by the increase of circuit inductance and the SW peak pressure several-cm away from the wire is not sensitive to the increase of circuit inductance if properly choosing the diameter of load wire: the maximum SW peak pressure obtained with varied diameter (constant energy storage and wire length) only saw a decrease of 30% as the circuit inductance increased by 60 times from 1.55 μH (0.3 mm diameter, 19 MPa) to 93.2 μH (0.2 mm diameter, 13 MPa). Hydrodynamic calculations were used to explain the experimental results. These results indicated that for a practical UEWE system, the energy storage can be far away from the load while keeping an acceptable loss of the capability of generating strong SWs, which greatly improves the flexibility of system designing for example by enabling much larger energy storage for certain harsh working environments.