MD-CFD investigations of hydrogen storage performance in aquifers considering media deformation

IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Science Pub Date : 2025-02-01 DOI:10.1016/j.ces.2024.121069

Chao Yan , Zechen Yan , Tianci Huo , Lei Zhu , Sen Wang , Xiaofang Li

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Abstract

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 SO₄^2- 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.

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考虑介质变形的含水层储氢性能的MD-CFD研究

地下蓄水层储氢是缓解能源危机的重要手段。在413 K和50 MPa条件下，采用分子动力学和计算流体动力学模拟方法，研究了注氢速度、孔隙润湿性和矿化度对未变形和变形多孔介质储氢性能的影响。结果表明，降低注氢速度和疏水多孔介质能较好地实现实际的储氢性能。SO42-对含水层储氢有促进作用，Cl-对含水层储氢有负面影响。在变形多孔介质中，由于约束域效应的增强，上述因素对储氢性能的影响更大。因此，通过调节注气速度、润湿性和矿化度可以很好地控制储氢性能。该研究对提高地下含水层储氢效率具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemical Engineering Science 工程技术-工程：化工

CiteScore

7.50

自引率

8.50%

发文量

1025

审稿时长

50 days

期刊介绍： Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline. Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.