Critically balanced ion temperature gradient turbulence in fusion plasmas.
Scaling laws for ion temperature gradient driven turbulence in magnetized toroidal plasmas are derived and compared with direct numerical simulations. Predicted dependences of turbulence fluctuation amplitudes, spatial scales, and resulting heat fluxes on temperature gradient and magnetic field line...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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2011
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| _version_ | 1797098026031906816 |
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| author | Barnes, M Parra, F Schekochihin, A |
| author_facet | Barnes, M Parra, F Schekochihin, A |
| author_sort | Barnes, M |
| collection | OXFORD |
| description | Scaling laws for ion temperature gradient driven turbulence in magnetized toroidal plasmas are derived and compared with direct numerical simulations. Predicted dependences of turbulence fluctuation amplitudes, spatial scales, and resulting heat fluxes on temperature gradient and magnetic field line pitch are found to agree with numerical results in both the driving and inertial ranges. Evidence is provided to support the critical balance conjecture that parallel streaming and nonlinear perpendicular decorrelation times are comparable at all spatial scales, leading to a scaling relationship between parallel and perpendicular spatial scales. This indicates that even strongly magnetized plasma turbulence is intrinsically three dimensional. |
| first_indexed | 2024-03-07T05:03:46Z |
| format | Journal article |
| id | oxford-uuid:d937940b-e90d-4227-82c1-3822695368b2 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:03:46Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | oxford-uuid:d937940b-e90d-4227-82c1-3822695368b22022-03-27T08:54:13ZCritically balanced ion temperature gradient turbulence in fusion plasmas.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d937940b-e90d-4227-82c1-3822695368b2EnglishSymplectic Elements at Oxford2011Barnes, MParra, FSchekochihin, AScaling laws for ion temperature gradient driven turbulence in magnetized toroidal plasmas are derived and compared with direct numerical simulations. Predicted dependences of turbulence fluctuation amplitudes, spatial scales, and resulting heat fluxes on temperature gradient and magnetic field line pitch are found to agree with numerical results in both the driving and inertial ranges. Evidence is provided to support the critical balance conjecture that parallel streaming and nonlinear perpendicular decorrelation times are comparable at all spatial scales, leading to a scaling relationship between parallel and perpendicular spatial scales. This indicates that even strongly magnetized plasma turbulence is intrinsically three dimensional. |
| spellingShingle | Barnes, M Parra, F Schekochihin, A Critically balanced ion temperature gradient turbulence in fusion plasmas. |
| title | Critically balanced ion temperature gradient turbulence in fusion plasmas. |
| title_full | Critically balanced ion temperature gradient turbulence in fusion plasmas. |
| title_fullStr | Critically balanced ion temperature gradient turbulence in fusion plasmas. |
| title_full_unstemmed | Critically balanced ion temperature gradient turbulence in fusion plasmas. |
| title_short | Critically balanced ion temperature gradient turbulence in fusion plasmas. |
| title_sort | critically balanced ion temperature gradient turbulence in fusion plasmas |
| work_keys_str_mv | AT barnesm criticallybalancediontemperaturegradientturbulenceinfusionplasmas AT parraf criticallybalancediontemperaturegradientturbulenceinfusionplasmas AT schekochihina criticallybalancediontemperaturegradientturbulenceinfusionplasmas |