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Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow
Published on: February 27, 2016
Turbulence in more than two and less than three dimensions
Antonio Celani1, Stefano Musacchio, Dario Vincenzi
1CNRS URA 2171, Institut Pasteur, 28 rue du docteur Roux, 75724 Paris Cedex 15, France.
Physical Review Letters
|May 21, 2010
Summary
Turbulent systems in compactified dimensions exhibit a novel cascade splitting phenomenon. This behavior was observed in passive scalar turbulence and Navier-Stokes simulations.
Area of Science:
- Fluid dynamics
- Turbulence theory
- Mathematical physics
Background:
- Understanding turbulence in non-standard geometries is crucial for advancing fluid dynamics.
- Previous models often simplify geometric complexities, limiting applicability.
Purpose of the Study:
- To investigate the behavior of turbulent systems in geometries with one compactified dimension.
- To identify novel phenomena in turbulence under such conditions.
Main Methods:
- Theoretical analysis of passive scalar turbulence.
- Direct numerical simulations of Navier-Stokes turbulence.
Main Results:
- A novel phenomenological scenario was identified.
- This scenario is dominated by the splitting of the turbulent cascade.
- The findings were consistent across theoretical and simulation approaches.
Conclusions:
- The splitting of the turbulent cascade is a key feature of turbulence in compactified dimensions.
- This study provides new insights into the fundamental nature of turbulence.
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