Anular Flow Models Lesson-3

This lesson covers the concept of anular flow models, a typical flow pattern in gas-liquid two-phase flow. It delves into the calculation of film velocity in both laminar and turbulent regimes, and the evaluation of film flow rate in two-phase flow configurations. The lesson also discusses the assessment of non-dimensional film thickness based on film Reynolds number and the definition of two-phase multiplier for gas or liquid portion as a function of void fraction. For instance, in a pipe with anular flow, a liquid film adheres to the pipe wall while the gaseous phase is found in the core of the tube.

Video Highlights

01:23 - Anular flow configuration with a pictorial view.
04:58 - Film flows in both laminar and turbulent regimes.
07:46 - Film flow rate in the two-face flow configuration.
13:25 - Explanation of the concept of non-dimensional film thickness based on film renals number.
15:24 - Calculation of the friction factors or two-phase multipliers for gas portion and liquid portion.

Key Takeaways

- Anular flow model is a typical flow pattern in gas-liquid two-phase flow.
- The lesson provides a detailed understanding of the calculation of film velocity in both laminar and turbulent regimes.
- It explains the evaluation of film flow rate in two-phase flow configurations.
- The lesson discusses the assessment of non-dimensional film thickness based on film Reynolds number.
- It defines the two-phase multiplier for gas or liquid portion as a function of void fraction.