Nonperturbative models of intermittency in edge turbulence
- Department of Applied Mathematics, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH (United Kingdom)
A theory of the probability distribution function (PDF) tails of the blob density in plasma edge turbulence is provided. A simplified model of the fast convective radial transport is used. The theoretically predicted PDF tails corroborate earlier measurements of edge transport, further confirming the strongly non-Gaussian feature of edge transport. It is found that increasing the cross-sectional spatial scale length (L{sub x} and L{sub y}) of the blob results in larger transport, whereas increasing the toroidal scale length (L{sub z}) decreases the PDF. The results imply that the PDF decreases for larger blob speed v{sub b}.
- OSTI ID:
- 21259705
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 12 Vol. 15; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Evolution of intermittent filaments in the scrape-off layer of NSTX
MODELING OF THE NON-GAUSSIAN PDFs OF FIELD VARIATIONS AND INTERMITTENCY IN THE TURBULENT SOLAR WIND
Study of statistical properties of edge turbulence in the National Spherical Torus Experiment with the gas puff imaging diagnostic
Journal Article
·
Wed Oct 15 20:00:00 EDT 2025
· Physics of Plasmas
·
OSTI ID:2999375
MODELING OF THE NON-GAUSSIAN PDFs OF FIELD VARIATIONS AND INTERMITTENCY IN THE TURBULENT SOLAR WIND
Journal Article
·
Sat Mar 09 23:00:00 EST 2013
· Astrophysical Journal
·
OSTI ID:22127009
Study of statistical properties of edge turbulence in the National Spherical Torus Experiment with the gas puff imaging diagnostic
Journal Article
·
Mon Oct 15 00:00:00 EDT 2007
· Physics of Plasmas
·
OSTI ID:21057429