Data assimilation system based on integrated transport simulation of Large Helical Device plasma

Data assimilation system based on integrated transport simulation of Large Helical Device plasma
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基于大型螺旋装置等离子体综合输运模拟的数据同化系统

DOI:
10.1088/1741-4326/ab7596
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发表时间:
2020
期刊:
影响因子:
3.3
通讯作者:
Ueno Genta
Ueno Genta
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Morishita Yuya;Murakami Sadayoshi;Yokoyama Masayuki;Ueno Genta

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数据同化技术应用于大型螺旋装置(LHD)中等离子体的综合输运模拟(TASK3D)。我们使用集成卡尔曼滤波器(EnKF)作为数据同化方法来估计由电子和离子温度、密度、湍流模型数值系数和 NBI 热沉积组成的状态变量。实验测量的温度和密度分布的时间序列数据被同化到 TASK3D 中。由于所采用的湍流输运模型和热沉积的优化,数据同化系统获得的电子和离子温度分布和时间变化与测量结果非常吻合。这些结果表明了数据同化方法对于准确预测聚变等离子体行为的有效性和有效性以及高级湍流建模的可能性。
A data assimilation technique is applied to the integrated transport simulation (TASK3D) of a plasma in Large Helical Device (LHD). We use the ensemble Kalman filter (EnKF) as a data assimilation method for the estimation of state variables composed of the electron and ion temperature, density, numerical coefficients of turbulence models, and NBI heat deposition. The time series data of experimentally measured temperature and density profiles are assimilated into TASK3D. The obtained electron and ion temperature profiles and temporal variations by the data assimilation system agree well with measured ones owing to the optimization of the employed turbulent transport model and the heat deposition. These results indicate the effectiveness and validity of the data assimilation approach for accurate prediction of the behavior of fusion plasmas and the possibility of advanced turbulence modeling.
使用 GNET-TD 和 TASK3D 进行时间演化 LHD 等离子体的集成输运仿真
DOI: 10.7566/jpscp.1.015045
发表时间: 2014
期刊: --
影响因子: --
作者:
H. Yamaguchi;S. Murakami;Akira Sakai;A. Wakasa;H. Takahashi;K. Nagaoka;H. Nakano;M. Yokoyama;M. Osakabe;I. Yamada;A. Fukuyama
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DOI: 10.1088/0029-5515/55/12/123006
发表时间: 2015-12-01
期刊: NUCLEAR FUSION
影响因子: 3.3
作者:
Imbeaux, F.;Pinches, S. D.;Strand, P.
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DOI: --
发表时间: 2006
期刊: Nuclear Fusion 46・5
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LHD 中多离子种类等离子体的综合热传输模拟
DOI: 10.1585/pfr.9.3403124
发表时间: 2014
影响因子: 0.8
作者:
Akira Sakai;S. Murakami;H. Yamaguchi;A. Wakasa;A. Fukuyama
通讯作者: A. Fukuyama