Comparisons of gyrofluid and gyrokinetic simulationsf|
Parker, S. E. ; Dorland, W. ; Santoro, R. A. ; Beer, M. A. ; Liu, Q. P. ; Lee, W. W. ; Hammett, G. W.
[S.l.] : American Institute of Physics (AIP)
Published 1994
[S.l.] : American Institute of Physics (AIP)
Published 1994
| ISSN: |
1089-7674
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|---|---|
| Source: |
AIP Digital Archive
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| Topics: |
Physics
|
| Notes: |
The gyrokinetic and gyrofluid models show the most promise for large scale simulations of tokamak microturbulence. This paper discusses detailed comparisons of these two complementary approaches. Past comparisons with linear theory have been fairly good, therefore the emphasis here is on nonlinear comparisons. Simulations include simple two-dimensional slab test cases, turbulent three-dimensional slab cases, and toroidal cases, each modeling the nonlinear evolution of the ion temperature gradient instability. There is good agreement in both turbulent and coherent nonlinear slab comparisons in terms of the ion heat flux, both in magnitude and scaling with magnetic shear. However, the nonlinear saturation level for ||Φ|| in the slab comparisons shows differences of approximately 40%. Preliminary toroidal comparisons show agreement within 50%, in terms of ion heat flux and saturation level.
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| Type of Medium: |
Electronic Resource
|
| URL: |
| _version_ | 1798289735554170881 |
|---|---|
| autor | Parker, S. E. Dorland, W. Santoro, R. A. Beer, M. A. Liu, Q. P. Lee, W. W. Hammett, G. W. |
| autorsonst | Parker, S. E. Dorland, W. Santoro, R. A. Beer, M. A. Liu, Q. P. Lee, W. W. Hammett, G. W. |
| book_url | http://dx.doi.org/10.1063/1.870696 |
| datenlieferant | nat_lic_papers |
| hauptsatz | hsatz_simple |
| identnr | NLZ219389632 |
| issn | 1089-7674 |
| journal_name | Physics of Plasmas |
| materialart | 1 |
| notes | The gyrokinetic and gyrofluid models show the most promise for large scale simulations of tokamak microturbulence. This paper discusses detailed comparisons of these two complementary approaches. Past comparisons with linear theory have been fairly good, therefore the emphasis here is on nonlinear comparisons. Simulations include simple two-dimensional slab test cases, turbulent three-dimensional slab cases, and toroidal cases, each modeling the nonlinear evolution of the ion temperature gradient instability. There is good agreement in both turbulent and coherent nonlinear slab comparisons in terms of the ion heat flux, both in magnitude and scaling with magnetic shear. However, the nonlinear saturation level for ||Φ|| in the slab comparisons shows differences of approximately 40%. Preliminary toroidal comparisons show agreement within 50%, in terms of ion heat flux and saturation level. |
| package_name | American Institute of Physics (AIP) |
| publikationsjahr_anzeige | 1994 |
| publikationsjahr_facette | 1994 |
| publikationsjahr_intervall | 8009:1990-1994 |
| publikationsjahr_sort | 1994 |
| publikationsort | [S.l.] |
| publisher | American Institute of Physics (AIP) |
| reference | 1 (1994), S. 1461-1468 |
| search_space | articles |
| shingle_author_1 | Parker, S. E. Dorland, W. Santoro, R. A. Beer, M. A. Liu, Q. P. Lee, W. W. Hammett, G. W. |
| shingle_author_2 | Parker, S. E. Dorland, W. Santoro, R. A. Beer, M. A. Liu, Q. P. Lee, W. W. Hammett, G. W. |
| shingle_author_3 | Parker, S. E. Dorland, W. Santoro, R. A. Beer, M. A. Liu, Q. P. Lee, W. W. Hammett, G. W. |
| shingle_author_4 | Parker, S. E. Dorland, W. Santoro, R. A. Beer, M. A. Liu, Q. P. Lee, W. W. Hammett, G. W. |
| shingle_catch_all_1 | Parker, S. E. Dorland, W. Santoro, R. A. Beer, M. A. Liu, Q. P. Lee, W. W. Hammett, G. W. Comparisons of gyrofluid and gyrokinetic simulationsf| The gyrokinetic and gyrofluid models show the most promise for large scale simulations of tokamak microturbulence. This paper discusses detailed comparisons of these two complementary approaches. Past comparisons with linear theory have been fairly good, therefore the emphasis here is on nonlinear comparisons. Simulations include simple two-dimensional slab test cases, turbulent three-dimensional slab cases, and toroidal cases, each modeling the nonlinear evolution of the ion temperature gradient instability. There is good agreement in both turbulent and coherent nonlinear slab comparisons in terms of the ion heat flux, both in magnitude and scaling with magnetic shear. However, the nonlinear saturation level for ||Φ|| in the slab comparisons shows differences of approximately 40%. Preliminary toroidal comparisons show agreement within 50%, in terms of ion heat flux and saturation level. 1089-7674 10897674 American Institute of Physics (AIP) |
| shingle_catch_all_2 | Parker, S. E. Dorland, W. Santoro, R. A. Beer, M. A. Liu, Q. P. Lee, W. W. Hammett, G. W. Comparisons of gyrofluid and gyrokinetic simulationsf| The gyrokinetic and gyrofluid models show the most promise for large scale simulations of tokamak microturbulence. This paper discusses detailed comparisons of these two complementary approaches. Past comparisons with linear theory have been fairly good, therefore the emphasis here is on nonlinear comparisons. Simulations include simple two-dimensional slab test cases, turbulent three-dimensional slab cases, and toroidal cases, each modeling the nonlinear evolution of the ion temperature gradient instability. There is good agreement in both turbulent and coherent nonlinear slab comparisons in terms of the ion heat flux, both in magnitude and scaling with magnetic shear. However, the nonlinear saturation level for ||Φ|| in the slab comparisons shows differences of approximately 40%. Preliminary toroidal comparisons show agreement within 50%, in terms of ion heat flux and saturation level. 1089-7674 10897674 American Institute of Physics (AIP) |
| shingle_catch_all_3 | Parker, S. E. Dorland, W. Santoro, R. A. Beer, M. A. Liu, Q. P. Lee, W. W. Hammett, G. W. Comparisons of gyrofluid and gyrokinetic simulationsf| The gyrokinetic and gyrofluid models show the most promise for large scale simulations of tokamak microturbulence. This paper discusses detailed comparisons of these two complementary approaches. Past comparisons with linear theory have been fairly good, therefore the emphasis here is on nonlinear comparisons. Simulations include simple two-dimensional slab test cases, turbulent three-dimensional slab cases, and toroidal cases, each modeling the nonlinear evolution of the ion temperature gradient instability. There is good agreement in both turbulent and coherent nonlinear slab comparisons in terms of the ion heat flux, both in magnitude and scaling with magnetic shear. However, the nonlinear saturation level for ||Φ|| in the slab comparisons shows differences of approximately 40%. Preliminary toroidal comparisons show agreement within 50%, in terms of ion heat flux and saturation level. 1089-7674 10897674 American Institute of Physics (AIP) |
| shingle_catch_all_4 | Parker, S. E. Dorland, W. Santoro, R. A. Beer, M. A. Liu, Q. P. Lee, W. W. Hammett, G. W. Comparisons of gyrofluid and gyrokinetic simulationsf| The gyrokinetic and gyrofluid models show the most promise for large scale simulations of tokamak microturbulence. This paper discusses detailed comparisons of these two complementary approaches. Past comparisons with linear theory have been fairly good, therefore the emphasis here is on nonlinear comparisons. Simulations include simple two-dimensional slab test cases, turbulent three-dimensional slab cases, and toroidal cases, each modeling the nonlinear evolution of the ion temperature gradient instability. There is good agreement in both turbulent and coherent nonlinear slab comparisons in terms of the ion heat flux, both in magnitude and scaling with magnetic shear. However, the nonlinear saturation level for ||Φ|| in the slab comparisons shows differences of approximately 40%. Preliminary toroidal comparisons show agreement within 50%, in terms of ion heat flux and saturation level. 1089-7674 10897674 American Institute of Physics (AIP) |
| shingle_title_1 | Comparisons of gyrofluid and gyrokinetic simulationsf| |
| shingle_title_2 | Comparisons of gyrofluid and gyrokinetic simulationsf| |
| shingle_title_3 | Comparisons of gyrofluid and gyrokinetic simulationsf| |
| shingle_title_4 | Comparisons of gyrofluid and gyrokinetic simulationsf| |
| sigel_instance_filter | dkfz geomar wilbert ipn albert |
| source_archive | AIP Digital Archive |
| timestamp | 2024-05-06T08:05:34.025Z |
| titel | Comparisons of gyrofluid and gyrokinetic simulationsf| |
| titel_suche | Comparisons of gyrofluid and gyrokinetic simulationsf| |
| topic | U |
| uid | nat_lic_papers_NLZ219389632 |