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Updated: Oct 5, 2025
06:42
Magnetically Induced Rotating Rayleigh-Taylor Instability
Published on: March 3, 2017
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Dimensional effects in Rayleigh-Taylor mixing
Guido Boffetta1, Stefano Musacchio1
1Department of Physics and INFN, via P. Giuria 1, 10125 Torino, Italy.
Summary
Dimensional confinement, like in two-dimensional flow, speeds up Rayleigh-Taylor mixing in bulk and porous media. This effect enhances mass transfer efficiency by strengthening density-velocity correlations.
Area of Science:
- Fluid dynamics
- Multiphase flow
Background:
- Rayleigh-Taylor instability drives mixing in stratified fluids.
- Understanding mixing in confined geometries is crucial for various applications.
Purpose of the Study:
- To investigate the impact of dimensional confinement on Rayleigh-Taylor mixing.
- To compare mixing dynamics in bulk flow versus porous media.
Main Methods:
- Numerical simulations of transport equations.
- Analysis of incompressible flow dynamics.
Main Results:
- Two-dimensional confinement accelerates mixing and increases mixing layer speed.
- Stronger density-velocity correlations observed due to confinement.
- Enhanced mass transfer efficiency, indicated by Nusselt number dependence on Rayleigh number.
Conclusions:
- Dimensional confinement significantly alters Rayleigh-Taylor mixing dynamics.
- Confinement enhances mixing efficiency through altered field correlations.
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