Hydrogen storage in underground aquifers is an important method for alleviating the energy crisis. In this study, the influence of hydrogen injection velocity, pore wettability, and salinity on the hydrogen storage performance in the undeformed and deformed porous media is investigated by utilizing molecular dynamics and computational fluid dynamics simulation methods at 413 K and 50 MPa. The results show that the reducing hydrogen injection velocity and hydrophobic porous media would be appropriate for practical hydrogen storage performance. Additionally, the SO42- would promote hydrogen storage in aquifers while Cl- would generate a negative influence on hydrogen storage. The effect of above-mentioned factors on hydrogen storage performance could be greater in deformed porous media due to the enhanced restrain-domain effect. Accordingly, hydrogen storage performance could be well controlled by regulating gas injection velocity, wettability and salinity. This research is of great significance for achieving better hydrogen storage efficiency in underground aquifers.

中文翻译：

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考虑介质变形的含水层储氢性能的 MD-CFD 研究


在地下含水层中储存氢气是缓解能源危机的重要方法。本研究利用分子动力学和计算流体动力学模拟方法，研究了 413 K 和 50 MPa 下注氢速度、孔隙润湿性和盐度对未变形和变形多孔介质中储氢性能的影响。结果表明，降低氢气注入速度和疏水性多孔介质适用于实际的储氢性能。此外，SO ₄ ^2- 将促进含水层中的氢储存，而 Cl ^- 将对氢储存产生负面影响。由于约束域效应增强，上述因素对变形多孔介质储氢性能的影响可能更大。因此，可以通过调节气体注入速度、润湿性和盐度来很好地控制储氢性能。这项研究对于提高地下含水层的储氢效率具有重要意义。