Droplet Annular and Stratified Flow Models Lesson-4

This lesson covers the intricate aspects of two-phase flow and heat transfer, focusing on droplet annular flow and stratified flow models. It delves into the methodologies for generating droplets from annular flow and how it transforms into droplet flow. The lesson also discusses the correction of the two-phase friction multiplier for calculating friction factors. It further explores the evaluation of flooding limit for droplet annular flow based on the drift flux model. The lesson concludes with a discussion on stratified flow, demonstrating how wave structure can be clubbed in horizontal orientation and the extraction of the limits of large and small wave lengths.

Video Highlights

02:35 - Explanation of how droplet annular flow generates.
06:05 - Definition of parameter 'e'.
10:09 - Friction factor for annular flow using the two-phase multiplier Phi.
16:54 - Discussion on the flooding criteria for droplet annular flow.
21:30 - Introduction to Stratified flow.

Key Takeaways

- The lesson provides a comprehensive understanding of droplet annular flow and its generation methodologies.
- It explains the correction of the two-phase friction multiplier for friction factor calculation.
- The lesson discusses the evaluation of flooding limit for droplet annular flow using the drift flux model.
- It provides insights into stratified flow, including the clubbing of wave structure in horizontal orientation and the extraction of large and small wave lengths.
- The lesson concludes with a quiz to test the understanding of the concepts discussed.