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Updated: Aug 5, 2026
11:03
An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
Integrating macroscopic geometry and fluid-fracture feedback in dissolution analysis beyond isolated factors
Menghan Chu1, Haichun Ma1, Chunchao Zhang2
1School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China; Hydraulic Fracturing and Oil-Gas Migration Development Center, Hefei University of Technology, Hefei 230009, China.
Journal of Contaminant Hydrology
|August 3, 2026
Summary
Calcite
Area of Science:
- Geochemistry
- Geology
- Computational Modeling
Background:
- Acidic dissolution of calcite is crucial for karst systems and carbonate weathering.
- Understanding the interplay between geometry, fluid flow, and dissolution is essential.
Purpose of the Study:
- To investigate the coupling mechanisms of geometric characteristics, fluid transport, and calcite dissolution kinetics.
- To quantify the impact of macroscopic curvature on dissolution rates using a novel coefficient.
Main Methods:
- Controlled numerical simulations using dynamic mesh approach.
- Establishment of 2D geometric models for calcite particles and fractured matrices.
- Introduction of the Curvature-Dissolution Rate Coupling Response Coefficient (RC).
Main Results:
- Dissolution rate of elliptical particles varies non-monotonically with aspect ratio (Rm).
- Reaction rate is highly sensitive to curvature changes when Rm < 1.
- Acid concentration (ac) is the dominant factor controlling calcite shrinkage degree (Sd).
- Acid etching in fractures leads to channelization and altered fluid flow behavior.
Conclusions:
- Macroscopic curvature significantly influences calcite dissolution kinetics.
- Acid concentration plays a primary role in the dissolution process.
- Fluid-fracture interactions exhibit dynamic feedback mechanisms driving channelization.
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