Measuring microscale flow features II — Lesson 2

This lesson covers the concept of micro PIV (Particle Image Velocimetry) analysis and its application in measuring micro scale flow features. The lesson focuses on the internal flow dynamics of a ferrofluid droplet under the influence of a magnetic field. It explains how micro PIV analysis can capture both qualitative and quantitative aspects of the internal hydrodynamics of the droplet. The lesson also discusses the use of fluorescent particles in visualizing the flow field and the importance of maintaining certain conditions for accurate measurements. For instance, it highlights the need for the droplet to remain in its position and for the particles to be neutrally buoyant. The lesson concludes with a discussion on the importance of micro PIV analysis in capturing rich flow structures in micro droplet domains.

Video Highlights

01:50 - Micro PIV analysis setup and its components
08:39 - Experimental setup used to measure micro scale flow features
13:06 - Process of measuring the flow velocity using micro PIV analysis
28:48 - Process of capturing the internal flow structure qualitatively and quantitatively
46:23 - Importance of capturing the accurate physics of the phenomenon using micro PIV technique

Key Takeaways

- Micro PIV analysis is a crucial tool for measuring micro scale flow features, both qualitatively and quantitatively.
- The internal flow dynamics of a ferrofluid droplet under the influence of a magnetic field can be captured using micro PIV analysis.
- Fluorescent particles play a significant role in visualizing the flow field.
- Certain conditions, such as the droplet remaining in its position and the particles being neutrally buoyant, need to be maintained for accurate measurements.
- Micro PIV analysis is essential in capturing rich flow structures in micro droplet domains.