Non-perturbative models of intermittency in drift-wave turbulence: Towards a probabilistic theory of anomalous transport

Eun Jin Kim; P. H. Diamond; M. Malkov; T. S. Hahm; K. Itoh; S. I. Itoh; S. Champeaux; I. Gruzinov; O. Gurcan; C. Holland; M. N. Rosenbluth; A. Smolyakov

doi:10.1088/0029-5515/43/9/321

Non-perturbative models of intermittency in drift-wave turbulence: Towards a probabilistic theory of anomalous transport

Eun Jin Kim
, P. H. Diamond
, M. Malkov
, T. S. Hahm
, K. Itoh
, S. I. Itoh
, S. Champeaux
, I. Gruzinov
, O. Gurcan
, C. Holland
, M. N. Rosenbluth
, A. Smolyakov

Department of Physics
University of California, San Diego
Princeton Plasma Physics Laboratory
National Institute for Fusion Science
Kyushu University, Research Institute for Applied Mechanics
University of Saskatchewan

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

43 Citations (Scopus)

Résumé

Two examples of non-perturbative models of intermittency in drift-wave (DW) turbulence are presented. The first is a calculation of the probability distribution function (PDF) of ion heat flux due to structures in ion temperature gradient turbulence. The instanton calculus predicts the PDF to be a stretched exponential. The second is a derivation of a bi-variate Burgers equation for the evolution of the DW population density in the presence of radially extended streamer flows. The PDF of fluctuation intensity avalanches is determined. The relation of this to turbulence spreading, observed in simulations, is discussed.

langue originale	Anglais
Pages (de - à)	961-968
Nombre de pages	8
journal	Nuclear Fusion
Volume	43
Numéro de publication	9
Les DOIs	https://doi.org/10.1088/0029-5515/43/9/321
état	Publié - 1 sept. 2003
Modification externe	Oui

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title = "Non-perturbative models of intermittency in drift-wave turbulence: Towards a probabilistic theory of anomalous transport",

abstract = "Two examples of non-perturbative models of intermittency in drift-wave (DW) turbulence are presented. The first is a calculation of the probability distribution function (PDF) of ion heat flux due to structures in ion temperature gradient turbulence. The instanton calculus predicts the PDF to be a stretched exponential. The second is a derivation of a bi-variate Burgers equation for the evolution of the DW population density in the presence of radially extended streamer flows. The PDF of fluctuation intensity avalanches is determined. The relation of this to turbulence spreading, observed in simulations, is discussed.",

author = "Kim, \{Eun Jin\} and Diamond, \{P. H.\} and M. Malkov and Hahm, \{T. S.\} and K. Itoh and Itoh, \{S. I.\} and S. Champeaux and I. Gruzinov and O. Gurcan and C. Holland and Rosenbluth, \{M. N.\} and A. Smolyakov",

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T1 - Non-perturbative models of intermittency in drift-wave turbulence

T2 - Towards a probabilistic theory of anomalous transport

AU - Kim, Eun Jin

AU - Diamond, P. H.

AU - Malkov, M.

AU - Hahm, T. S.

AU - Itoh, K.

AU - Itoh, S. I.

AU - Champeaux, S.

AU - Gruzinov, I.

AU - Gurcan, O.

AU - Holland, C.

AU - Rosenbluth, M. N.

AU - Smolyakov, A.

PY - 2003/9/1

Y1 - 2003/9/1

N2 - Two examples of non-perturbative models of intermittency in drift-wave (DW) turbulence are presented. The first is a calculation of the probability distribution function (PDF) of ion heat flux due to structures in ion temperature gradient turbulence. The instanton calculus predicts the PDF to be a stretched exponential. The second is a derivation of a bi-variate Burgers equation for the evolution of the DW population density in the presence of radially extended streamer flows. The PDF of fluctuation intensity avalanches is determined. The relation of this to turbulence spreading, observed in simulations, is discussed.

AB - Two examples of non-perturbative models of intermittency in drift-wave (DW) turbulence are presented. The first is a calculation of the probability distribution function (PDF) of ion heat flux due to structures in ion temperature gradient turbulence. The instanton calculus predicts the PDF to be a stretched exponential. The second is a derivation of a bi-variate Burgers equation for the evolution of the DW population density in the presence of radially extended streamer flows. The PDF of fluctuation intensity avalanches is determined. The relation of this to turbulence spreading, observed in simulations, is discussed.

U2 - 10.1088/0029-5515/43/9/321

DO - 10.1088/0029-5515/43/9/321

M3 - Article

AN - SCOPUS:0141508033

SN - 0029-5515

VL - 43

SP - 961

EP - 968

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 9

ER -

Non-perturbative models of intermittency in drift-wave turbulence: Towards a probabilistic theory of anomalous transport

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