脉冲电弧电液放电产生的水中冲击波传播的实验与数值研究
Experimental and numerical study of shock wave propagation in water generated by pulsed arc electrohydraulic discharges
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中文总结 AI 辅助
本研究通过实验和数值模拟，利用EUROPLEXUS代码模拟脉冲电弧电液放电产生的水中冲击波传播，旨在开发替代水力压裂的增产技术，预测压力与实验一致，为水下工程设计提供参考。
中文摘要 AI 辅助
本研究的目的是模拟爆炸引起的水中冲击波传播。该研究是一个全球研究计划的一部分，该计划旨在开发一种替代传统致密气藏水力压裂的增产技术，其目标是在岩石中诱发分布式微裂纹状态，而非局部裂缝。我们考虑了通过动态爆炸提高岩石渗透率的可能性。爆炸是由脉冲电弧电液放电在水中产生的冲击波。这些冲击波的振幅由电液放电决定，后者在微秒内产生数千巴的高压。采用一种简化方法，将注入的电能模拟为水中局部的焓增加。使用有限元代码EUROPLEXUS进行流体快速动态计算。预测的压力与实验结果一致。此外，通过模拟预测的冲击波传播特性可为水下结构元件的设计和水下爆炸工程提供有价值的参考。
英文摘要
The objective of this study is to simulate the propagation of the shock wave in water due to an explosion. The study is part of a global research program on the development of an alternative stimulation technique to conventional hydraulic fracturing in tight gas reservoirs aimed at inducing a distributed state of microcracking of rocks instead of localized fracture. We consider the possibility of increasing the permeability of rocks with dynamic blasts. The blast is a shock wave generated in water by pulsed arc electrohydraulic discharges. The amplitude of these shock waves is prescribed by the electrohydraulic discharges which generate high pressures of several kilobars within microseconds. A simplified method has been used to simulate the injected electrical energy as augmentation of enthalpy in water locally. The finite element code EUROPLEXUS is used to perform fluid fast dynamic computation. The predicted pressure is consistent with the experimental results. In addition, shock wave propagation characteristics predicted with simulation can be valuable reference for design of underwater structural elements and engineering of underwater explosion.
发表机构
- Université de Pau（波城大学）
- Université de Tlemcen（特莱姆森大学）
- Total, CSTJF（道达尔公司，CSTJF）
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