Related Experiment Video
Updated: May 10, 2025

The Diffusion of Passive Tracers in Laminar Shear Flow
Published on: May 1, 2018
Diffusion Mechanism in Running-Water and CFD-DEM Numerical Simulation of Expandable Particulate Grouting Material
Zhipeng Zhang1, Chenyang Ma1, Chen Zhao1
1School of Civil Engineering, Institute of Geotechnical and Underground Engineering, Shandong University, Jinan 250061, China.
Abstract:
In order to study the diffusion and sealing mechanism of an innovative grouted material tentatively called "expandable particulate grout material", the diffusion process was simulated by the numerical method of CFD-DEM coupling. A numerical model was established for a grouting process in an individual fracture based on the basic physical parameters of expandable particles. The numerical model of the expandable particulate slurry flow was established. The interaction between particles and water in different conditions, such as different grouting times, different volume fractions of the particle, and different velocities, was investigated. The differences in the diffusion process and in the running-water sealing mechanism of expandable particles, cement slurry, and cement-sodium silicate slurry in the crack (in a, in b, and in c) were analyzed. The influence of expandable particles on the streamline of the grout and the drag force in the interaction process under the fracture were analyzed. This is summarized The influence of the velocity ratio of grout to water on different physical quantities, such as diffusion opening degree, diffusion velocity, and diffusion distance, was summarized. It is of significant theoretical and practical value to further develop and improve the grouting technology.
More Related Videos
10:12Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique
Published on: June 12, 2015
10:33A Method for Determination and Simulation of Permeability and Diffusion in a 3D Tissue Model in a Membrane Insert System for Multi-well Plates
Published on: February 23, 2018
Related Concept Videos
Typical Model Studies
Rapidly Varying Flow
Design Example: Creating a Hydraulic Model of a Dam Spillway
Gradually Varying Flow
Capillarity in Fluid
Surface tension is crucial to capillarity. It results from cohesive forces between liquid molecules at the liquid-air boundary, forming a skin that resists external forces. When the capillary tube...
Free Jet