Fractured Porous Media — Lesson 5

This lesson covers the concept of flow through porous media, focusing on miscible displacement and dispersion. It delves into the dispersion of solute or tracer in porous media, particularly when a fracture is embedded in the media. The lesson explains the linear flow along the fracture and into the matrix, and how this flow is affected by pressure and flow rates. It also discusses the impact of a contaminant entering the subsurface or a very low fluid flow rate. The lesson further explores the velocity at different points in the fracture and matrix, and how this affects the flow. It also touches on Darcy's law and how it applies to the fracture. The lesson concludes with a discussion on solute transport in a fractured media when there is unidirectional flow through the fracture.

Video Highlights

01:04 - Impact of pressure and flow rates on the flow
02:14 - Examination of velocity at different points in the fracture and matrix
07:01 - Application of Darcy's law to the fracture
16:56 - Discussion on solute transport in a fractured media

Key Takeaways

- The flow through porous media involves a linear flow along the fracture and into the matrix.
- The flow is influenced by the pressure in the fracture and the flow rates.
- The velocity at different points in the fracture and matrix affects the flow.
- Darcy's law can be applied to the fracture to understand the flow.
- Solute transport in a fractured media occurs when there is unidirectional flow through the fracture.