| BITS: an efficient transport solver based on a collocation method with B-spline basis |
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| 作者姓名： | Xiaotao XIAO |
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| 作者单位： | 1. Institute of Plasma Physics, Chinese Academy of Science;2. Department of Modern Physics, University of Science and Technology of China |
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| 基金项目： | This work was supported by the National MCF Energy R&D Program of China (No. 2019YFE03040004), the Comprehensive Research Facility for Fusion Technology Program of China (No. 2018-000052-73-01-001228), and the National MCF Energy R&D Program of China (No. 2019YFE03060000). |
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| 摘 要： | A B-spline Interpolation Transport Solver(BITS) based on a collocation method is developed. It solves transport equations as a generalized interpolation problem, taking the first-order accuracy in time and the second-order accuracy in space along with a predictor–corrector or under-relaxation iteration method. Numerical tests show that BITS can solve one-dimensional transport equations for tokamak plasma more accurately without additional computation cost, compared to the finite difference metho...
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BITS: an efficient transport solver based on a collocation method with B-spline basis |
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| Affiliation: | 1. Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031, People's Republic of China 2. Department of Modern Physics, University of Science and Technology of China, Hefei 230026, People's Republic of China |
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| Abstract: | A B-spline Interpolation Transport Solver (BITS) based on a collocation method is developed. It solves transport equations as a generalized interpolation problem, taking the first-order accuracy in time and the second-order accuracy in space along with a predictor–corrector or under-relaxation iteration method. Numerical tests show that BITS can solve one-dimensional transport equations for tokamak plasma more accurately without additional computation cost, compared to the finite difference method transport solver which is widely used in existing tokamak transport codes. |
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