Fluid Mechanics & Condensation — Lesson 4

This lesson covers the concept of flow through porous media, focusing on different transport mechanisms. It explains the shear-driven flow in fluid mechanics, the role of diffusion in the transport of molecules, and the impact of capillary condensation. The lesson also introduces the Kelvin equation and discusses how capillary condensation affects the transport process. It further explores the concept of condensation vaporization and its impact on the transport of molecules. The lesson concludes with a brief introduction to two-phase flow and the concept of deformable porous media.

Video Highlights

01:03 - Explanation of capillary condensation
12:17 - Understanding of condensation vaporization
24:13 - Introduction to two-phase flow

Key Takeaways

- Transport mechanisms in porous media include shear-driven flow, diffusion, and capillary condensation.
- Capillary condensation, influenced by surface forces, can significantly affect the transport process in porous media.
- The Kelvin equation relates the radius of the pore with the pressure at which condensation will occur.
- Condensation vaporization is a transport process where molecules condense and then evaporate, affecting the transport of molecules through the media.
- In a two-phase flow, different components of a mixture can travel at different speeds through the porous media.
- In deformable porous media, the porosity changes over time, affecting the flow rate.