Finite volume numerical analysis of joint geometry effect on grout velocity changes with variable viscosity under unsteady turbulent flow regime
MetadataShow full item record
The grout injected into the joint with a primary velocity but solidifies gradually depending on the joint geometry and grout characteristics. Therefore the velocity changes completely, both in the perpendicular and in the injection direction. In the present study, the changes of two velocity components in the joints with various geometries are investigated using computational fluid dynamics (CFD) and finite volume numerical method. For this purpose joints are modeled as parallel smooth plates and the saw-tooth with different matednesses. The results show that velocity component in the injection direction of a joint with parallel smooth plates always reveal parabolic distribution towards the joint aperture. In the saw-tooth joint, velocity component in the injection direction increases in the narrowed locations and its profile changes from parabolic to undulated form. The velocity component perpendicular to injection direction in the joints with parallel smooth plates equals to zero from joint entry up to the point in which grout starts to solidify and after that point this component emerges and then changes. Vertical component of velocity is non-zero in the saw-tooth joint from joint entry and the changes both in quantity and direction depend on joint matedness, joint aperture ratio (k) and joint walls direction and dip.
Showing items related by title, author, creator and subject.
Advanced Technologies for Monitoring CO2 Saturation and Pore Pressure in Geologic Formations: Linking the Chemical and Physical Effects to Elastic and Transport PropertiesMavko, G.; Vanorio, T.; Vialle, Stephanie; Saxena, N. (2014)Ultrasonic P- and S-wave velocities were measured over a range of confining pressures while injecting CO2 and brine into the samples. Pore fluid pressure was also varied and monitored together with porosity during injection. ...
Water Imbibition into Sandstones: Influence of Flow Rate on Water Distribution and Acoustic ResponseLopes, Sofia; Lebedev, Maxim; Müller, T. (2013)Fluid injection into a porous medium in order to displace another fluid is a commonprocedure while dealing with the recovery of subsurface fluids (e.g., secondarywaterflooding, oil recovery). The seismic method has been ...
Monitoring CO<inf>2</inf> response on surface seismic data; a rock physics and seismic modeling feasibility study at the CO<inf>2</inf> sequestration site, Ketzin, GermanyKazemeini, S.; Juhlin, Christopher; Fomel, S. (2010)An important component of any CO2 sequestration project is seismic monitoring for tracking changes in subsurface physical properties such as velocity and density. Reservoir conditions and CO2 injection quantities govern ...