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The properties of the spectral energy transfer for a two-dimensional fluid representation of dissipative trapped ion convective cell turbulence are studied numerically using a spectral method. It is established that the spectral energy flow is from long to short wavelength, as governed (under the dynamics of the {ital E}{times}{ital B} nonlinearity) by a single quadratic invariant, the energy. This flow is correctly predicted by equilibrium statistical mechanics, as is the equilibrium spectrum. Examining the locality of energy flow, strong nonlocal energy transfer is observed, a process that efficiently transfers the energy of a mode across the spectrum in a correlation time. This transfer process deviates dramatically from the canonical self-similar cascade dynamics of Kolmogorov that typifies the cascade of two- and three-dimensional Navier--Stokes and Hasegawa--Mima drift wave turbulence. Anisotropy of the spectral transfer dynamics is also observed.
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| Authors: |
Newman, D.E.;
Terry, P.W. (Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States));
Diamond, P.H. (Department of Physics, University of California at San Diego, La Jolla, California 92093 General Atomics, La Jolla, California 92138 (United States))
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| Publication Date: | 1992 Mar 01 |
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| OSTI Identifier: | 7046786 |
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| DOE Contract Number: | FG02-89ER53291 |
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| Resource Type: | Journal Article |
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| Resource Relation: | Journal Name: Physics of Fluids B; (United States); Journal Volume: 4:3 |
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| Country of Publication: | United States |
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| Language: | English |
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| Format: | Size: Pages: 599-610 |
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| Other Number(s): | Journal ID: ISSN 0899-8221; CODEN: PFBPE |
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| Subject: | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; TOKAMAK DEVICES; PLASMA CONFINEMENT; TRAPPED-PARTICLE INSTABILITY; ENERGY TRANSFER; CONVECTIVE INSTABILITIES; NAVIER-STOKES EQUATIONS; NUMERICAL SOLUTION; TRAPPED ELECTRONS; TURBULENCE; TWO-DIMENSIONAL CALCULATIONS; CLOSED PLASMA DEVICES; CONFINEMENT; DIFFERENTIAL EQUATIONS; ELECTRONS; ELEMENTARY PARTICLES; EQUATIONS; FERMIONS; INSTABILITY; LEPTONS; PARTIAL DIFFERENTIAL EQUATIONS; PLASMA INSTABILITY; PLASMA MACROINSTABILITIES; THERMONUCLEAR DEVICES |
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| Update Date: | 2009 Dec 17 |
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