The influence of gravity on the fractal model of imbibition in rough pores considering shape factor

IF 4.6 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Chinese Journal of Physics Pub Date : 2025-06-23 DOI:10.1016/j.cjph.2025.06.034

Shanshan Yang , Qiong Sheng , Mingqing Zou , Qian Zheng

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Abstract

Aiming at the spontaneous imbibition process in irregular rough pores, a fractal model of fluid imbibition into irregular rough pores without gravity and under gravity is established in this paper. The expressions of imbibition height and imbibition mass in irregular rough pores are derived. Then, the effects of relative roughness, gravity factor, fractal dimension, shape factor and other physical quantities on the imbibition process were discussed by sensitivity analysis. The imbibition mass of fluid in irregular rough pores is negatively correlated with relative roughness, and positively correlated with physical quantities such as shape factor, radius ratio and porosity. Moreover, it is found that the average imbibition mass in rough pores with relative roughness of ε₀ = 0.1 is 10.1 % lower than that in smooth pores, and 4.4 % higher than the experimental data, indicating that the imbibition mass in rough pores is more consistent with the experimental data.

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重力对考虑形状因素的粗孔吸胀分形模型的影响

针对不规则粗糙孔隙中的自发吸胀过程，建立了无重力和重力作用下不规则粗糙孔隙中流体吸胀的分形模型。推导了不规则粗糙孔隙吸胀高度和吸胀质量的表达式。然后，通过灵敏度分析探讨了相对粗糙度、重力因子、分形维数、形状因子等物理量对吸胀过程的影响。不规则粗糙孔隙中流体的吸胀量与相对粗糙度呈负相关，与形状因子、半径比、孔隙度等物理量呈正相关。相对粗糙度ε0 = 0.1时，粗孔的平均吸胀质量比光滑孔低10.1%，比实验数据高4.4%，表明粗孔的吸胀质量与实验数据更加吻合。

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来源期刊

Chinese Journal of Physics 物理-物理：综合

CiteScore

8.50

自引率

10.00%

发文量

361

审稿时长

44 days

期刊介绍： The Chinese Journal of Physics publishes important advances in various branches in physics, including statistical and biophysical physics, condensed matter physics, atomic/molecular physics, optics, particle physics and nuclear physics. The editors welcome manuscripts on: -General Physics: Statistical and Quantum Mechanics, etc.- Gravitation and Astrophysics- Elementary Particles and Fields- Nuclear Physics- Atomic, Molecular, and Optical Physics- Quantum Information and Quantum Computation- Fluid Dynamics, Nonlinear Dynamics, Chaos, and Complex Networks- Plasma and Beam Physics- Condensed Matter: Structure, etc.- Condensed Matter: Electronic Properties, etc.- Polymer, Soft Matter, Biological, and Interdisciplinary Physics. CJP publishes regular research papers, feature articles and review papers.