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Updated: Jun 13, 2025
09:19
Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light
Published on: July 29, 2013
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Localization-delocalization transition for light particles in turbulence
Ziqi Wang1, Xander M de Wit1, Federico Toschi1,2
1Department of Applied Physics and Science Education, Eindhoven University of Technology, Eindhoven 5600 MB, Netherlands.
Summary
Turbulent flows trap bubbles using vortex filaments. Modulated forcing controls bubble states, enabling new methods to probe turbulence and measure vortex properties for diverse applications.
Area of Science:
- Fluid dynamics
- Turbulence research
- Particle dynamics
Background:
- Bubbles rise due to Archimedes' force.
- Vortex filaments in turbulent flows trap bubbles, hindering their rise.
- Characterizing vortex filaments in turbulence is challenging due to their small scale and chaotic motion.
Purpose of the Study:
- Investigate bubble behavior in turbulent flows under modulated oscillatory forcing.
- Explore the resonant phenomenon between light particles and vortex filaments.
- Develop a method to use bubbles as probes for turbulence statistics and vortex filament properties.
Main Methods:
- Simulating bubble dynamics under modulated oscillatory forcing.
- Analyzing bubble transitions between localized and delocalized states.
- Developing a superposition model to interpret simulation data.
Main Results:
- Bubble behavior switches from localized to delocalized states with modulated forcing.
- A resonant phenomenon emerges between particles and vortex filaments, similar to forced damped oscillators.
- The superposition model accurately predicts particle dynamics and reveals vortex-induced potential landscapes.
Conclusions:
- Externally actuated bubbles can serve as microscopic probes for turbulence.
- This approach allows quantitative measurement of vortex filament characteristics.
- Potential applications include oceanography, medical imaging, and industrial mixing.
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