Understanding Multiphase Flows - 2 — Lesson 2

This lesson covers the concept of multiphase flows, focusing on the differences between single phase and multiphase flows, their applications, and the need for their study. The lesson delves into the hydrodynamics and other characteristics of multiphase flow, explaining how they are governed by various forces and how they differ based on the distribution of the two phases. The lesson also discusses the different types of flow patterns that can occur in a vertical tube, a horizontal tube, a heated tube, and a tube with liquid-liquid flow. The lesson concludes with a discussion on the phase inversion phenomenon in liquid-liquid flows.

Video Highlights

00:17 - Introduction to multiphase flows and its importance in various applications
07:10 - Explanation of the concept of continuous phase and discontinuous phase
14:15 - Explanation of the flow patterns in a vertical heated tube
43:32 - Explanation of the concept of phase inversion in liquid-liquid flows
49:11 - Presentation of pictures showing different flow patterns in liquid-liquid flows

Key Takeaways

- Multiphase flows differ from single phase flows in terms of their applications, the forces governing them, and the distribution of the two phases.
- The distribution of the two phases in a multiphase flow governs the entire physics of the flow, including the slip, heat mass, and reaction kinetics.
- Different types of flow patterns can occur in a vertical tube, a horizontal tube, a heated tube, and a tube with liquid-liquid flow.
- The phase inversion phenomenon in liquid-liquid flows is marked by a drastic increase in pressure drop and can enhance several transfer operations.