JRMGE / Vol 14 / Issue 2
A comparative study of using two numerical strategies to simulate the biochemical processes in microbially induced calcite precipitation
Dianlei Feng, Xuerui Wang, Udo Nackenhorst, Xuming Zhang, Pengzhi Pan
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a Department of Hydraulic Engineering, Tongji University, Shanghai, 200092, China
b Institute of Fluid Mechanics and Environmental Physics in Civil Engineering, Leibniz University Hannover, Hannover, 30167, Germany
c Institute of Mechanics and Computational Mechanics, Leibniz University Hannover, Hannover, 30167, Germany
d State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, China
2022, 14(2): 592-602. doi:10.1016/j.jrmge.2021.08.013
Received: 2021-02-24 / Revised: 2021-06-16 / Accepted: 2021-08-20 / Available online: 2021-11-27
2022, 14(2): 592-602.
doi:10.1016/j.jrmge.2021.08.013
Received: 2021-02-24
Revised: 2021-06-16
Accepted: 2021-08-20
Available online: 2021-11-27
In this study, we carried out a comparative study of two different numerical strategies for the modeling of the biogeochemical processes in microbially induced calcite precipitation (MICP) process. A simplified MICP model was used, which is based on the mass transport theory. Two numerical strategies, namely the operator splitting (OS) and the global implicit (GI) strategies, were adopted to solve the coupled reactive mass transport problems. These two strategies were compared in the aspects of numerical accuracy, convergence property and computational efficiency by solving the presented MICP model. To look more into the details of the model, sensitivity analysis of some important modeling parameters was also carried out in this paper.Dianlei Feng
Keywords: Microbially induced calcite precipitation (MICP), Advection-diffusion-reaction (ADR) equation, Time discontinuous Galerkin (TDG) method, OpenGeoSys-PHREEQC
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Author(s) Information
Xuerui Wang
✉️ xuerui.wang@ibnm.uni-hannover.de
Dr. Xuerui Wang is currently working as a researcher and lecturer at the Leibniz University Hannover in Germany. She received her PhD degree in Environmental Science from Technical University Dresden, Germany, on a project on the safety assessment of deep geological repositories for radioactive waste, which is founded by BMWi (The Federal Ministry for Economic Affairs and Energy of Germany). She has many years of research experience in the field of model development and numerical simulation of coupled problems in soil and rock. Her current research interests focus on the biochemo-hydro-mechanical couplings in porous media, multi-phase and multi-field modeling and numerical methods in geotechnical engineering.