Full Wave Simulations of Fast Wave Mode Conversion and Lower Hybrid Wave Propagation in Tokamaks
Full Wave Simulations of Fast Wave Mode Conversion and Lower Hybrid Wave Propagation in Tokamaks
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DOI：
10.1063/1.1652731
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发表时间：
2004-04
影响因子：
2.2
通讯作者：
J. Wright;P. Bonoli;M. Brambilla;F. Meo;E. D'Azevedo;D. Batchelor;E. Jaeger;L. Berry;C. Phil
中科院分区：
文献类型：
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作者：
J. Wright;P. Bonoli;M. Brambilla;F. Meo;E. D'Azevedo;D. Batchelor;E. Jaeger;L. Berry;C. Phil
研究环形等离子体中离子-离子混合层的模式转换(MC)过程的快波(FW)必须捕捉FW和模式转换的离子Bernstein波和离子回旋波的不同尺度。MC层的正确建模需要在k⊥ρi∼1量级上分辨波长，这导致最大极向模数Mmax成比例地与1/ρ*(ρ*≡ρi/L成比例)。所需的计算资源随着径向(Nr)、极向(Nθ)和环向(Nφ)元素的数量的增加而扩大，如Nr*Nφ*Nθ3。两个全波代码，一个大规模并行处理器版本的TORIC-2D有限拉莫半径代码[M.Brambilla，等离子体物理。受控融合41，1(1999)]和全阶谱编码AORSA2D[E.F.Jaeger等，Phys..等离子体9,1873(2002)]已经被开发出来，它首次能够达到解决全二维(2-D)环形几何中的模式转换现象所需的分辨率和速度。这些代码已用于共轭..。
Fast wave (FW) studies of mode conversion (MC) processes at the ion–ion hybrid layer in toroidal plasmas must capture the disparate scales of the FW and mode converted ion Bernstein and ion cyclotron waves. Correct modeling of the MC layer requires resolving wavelengths on the order of k⊥ρi∼1 which leads to a scaling of the maximum poloidal mode number, Mmax, proportional to 1/ρ* (ρ*≡ρi/L). The computational resources needed scale with the number of radial (Nr), poloidal (Nθ), and toroidal (Nφ) elements as Nr * Nφ * Nθ3. Two full wave codes, a massively-parallel-processor (MPP) version of the TORIC-2D finite Larmor radius code [M. Brambilla, Plasma Phys. Controlled Fusion 41, 1 (1999)] and also an all orders spectral code AORSA2D [E. F. Jaeger et al., Phys. Plasmas 9, 1873 (2002)], have been developed which for the first time are capable of achieving the resolution and speed necessary to address mode conversion phenomena in full two-dimensional (2-D) toroidal geometry. These codes have been used in conjun...