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Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section
Published on: July 19, 2016
Spectrum of coherent structures in a turbulent environment
1Association Euratom-C.E.A. sur la Fusion, C.E.A.-Cadarache, F-13108 Saint-Paul-lez-Durance, France and Association Euratom-NASTI Romania, National Institute for Laser, Plasma and Radiation Physics, P.O. Box MG-36, Magurele, Bucharest, Romania.
Physical Review Letters
|September 16, 2000
Summary
This study analyzes turbulent fields with interacting drift waves and coherent structures. A nonperturbative method was used to calculate the generating functional of correlations in the turbulent system.
Area of Science:
- Plasma physics
- Fluid dynamics
- Statistical mechanics
Background:
- Turbulent fields are complex systems governed by statistical properties.
- Drift waves and coherent structures are key components in plasma turbulence.
- Understanding their interaction is crucial for predicting plasma behavior.
Purpose of the Study:
- To investigate the statistical properties of a turbulent field.
- To analyze the random interaction between drift waves and a coherent structure.
- To calculate the generating functional of correlations within this system.
Main Methods:
- Employed a nonperturbative calculation method.
- Utilized an approach analogous to the "semiclassical" method in quantum mechanics.
- Explicitly computed the generating functional of correlations.
Main Results:
- The statistical properties of the turbulent field were determined.
- The generating functional of correlations was successfully calculated.
- The interaction dynamics between drift waves and coherent structures were characterized.
Conclusions:
- The nonperturbative method provides an effective way to study turbulent systems.
- The calculated generating functional offers insights into correlation properties.
- This research contributes to the understanding of wave-structure interactions in plasma turbulence.
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