Understanding Two Phase Flow with Phase Change — Lesson - 1

This lesson covers the concept of Two Phase Flow with Phase Change, focusing on the two types of phase change problems: solid-liquid phase change and liquid-vapor phase change. It delves into the intricacies of phase change phenomena, including boiling and condensation, and the continuous change of void fraction due to phase change. The lesson also discusses the conservation of energy in these processes. It highlights the applications of these concepts in power generation, refrigeration, cryogenics, process plants, material processing, and cooling applications. The lesson concludes with a detailed explanation of the pool boiling curve and the different stages of bubble growth.

Video Highlights

00:19 - Introduction to Two Phase Flow with Phase Change
14:09 - Explanation of the Pool Boiling Curve
23:17 - Discussion on Different Regimes of Boiling
41:52 - Explanation of Bubble Nucleation, Growth, and Collapse
49:46 - Discussion on Inertia Controlled and Thermally Controlled Bubble Growth

Key Takeaways

- Two Phase Flow with Phase Change involves two types of phase change problems: solid-liquid and liquid-vapor.
- The phase change phenomena include boiling and condensation, and involve a continuous change of void fraction.
- The conservation of energy is a crucial aspect of these processes.
- These concepts find applications in various fields like power generation, refrigeration, cryogenics, process plants, material processing, and cooling applications.
- The pool boiling curve provides a detailed understanding of the process, and the different stages of bubble growth are crucial in understanding the process dynamics.