Lattice-Boltzmann Methods for Simulating Fluid Flow through a Two-Dimensional Fracture
Fadhillah Akmal, Aldenia Alexandra, Irwan Ary Dharmawan*

Department of Geophysics, Faculty of Mathematics and Natural Science, Universitas Padjadjaran.
*iad[at]geophys.unpad.ac.id

Abstract

Fracture is a fault that does not shift and can be described as an open parallel plate medium with a smaller width than its length. Fractures are substantial contributors to the solute transport and sediment systems. Fracture has two physical parameters, there are mean aperture and surface roughness. The mean aperture is the thickness of the pathway through which the fluid will pass, and the surface roughness is the roughness of the fracture pathway. The two physical parameters are essential to determining the permeability of fluid flow in the fracture. The Lattice Boltzmann method is a numerical method that uses a mesoscopic approach to simulate laminar fluid flow through 2D fractures that have variations in mean aperture and surface roughness. The fracture model simulates that permeability will increase as mean aperture increases. The rougher the surface, it will interfere with the flow of the fluids and decrease permeability.

Keywords: Fracture- Mean Aperture- Surface Roughness- Lattice Boltzmann Methods

Topic: COMPUTATIONAL SCIENCES