The role of aspect ratio and beta in H-mode confinement scalings
The role of aspect ratio and beta in H-mode confinement scalings
复制标题
纵横比和 beta 在 H 模式限制尺度中的作用
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
H. Urano
中科院分区：
文献类型：
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作者：
S. Kaye;M. Valovic;A. Chudnovskiy;J. Cordey;D. McDonald;A. Meakins;K. Thomsen;R. Akers;G. Bracco;C. Brickley;C. Bush;A. Côté;J. Deboo;M. Greenwald;G. Hoang;D. Hogweij;F. Imbeaux;Y. Kamada;O. Kardaun;A. Kus;S. Lebedev;V. Leonov;S. Lynch;Y. Martin;Y. Miura;J. Ongena;G. Pacher;C. Petty;M. Romanelli;F. Ryter;K. Shinohara;J. Snipes;J. Stober;T. Takizuka;K. Tsuzuki;H. Urano
从NSTX和MAST实验中获得的高功率、低纵横比数据的加入，激发了对纵横比对约束尺度效应的新研究。各种统计方法，包括那些纳入测量误差的估计，已被应用到数据集的标准设置的标准，除了范围的κ和Meff适合ITER的操作。使用工程参数作为预测变量的标度的发展导致ε-标度系数在0.38到1.29的范围内;这些标度到物理变量的转换导致Bτ对β的不利依赖性，但对ε的有利依赖性。由于低纵横比器件在低BT下操作，因此在高βT下操作，因此在ε和β之间存在强相关性，并且这使得基于物理变量的缩放不精确。
The addition of high power, low aspect ratio data from the NSTX and MAST experiments has motivated a new investigation of the effect of aspect ratio on confinement scaling. Various statistical methods, including those that incorporate estimates of measurement error, have been applied to datasets constrained by the standard set of criteria in addition to the range of κ and Meff appropriate to ITER operation. Development of scalings using engineering parameters as predictor variables results in ε-scaling coefficients that range from 0.38 to 1.29; the transformation of these scalings to physics variables results in an unfavourable dependence of Bτ on β, but a favourable dependence on ε. Because the low aspect ratio devices operate at low BT and therefore high βT, a strong correlation exists between ε and β, and this makes scalings based on physics variables imprecise.