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首页> 外文期刊>Computer physics communications >COMPARISON OF INITIAL VALUE AND EIGENVALUE CODES FOR KINETIC TOROIDAL PLASMA INSTABILITIES
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COMPARISON OF INITIAL VALUE AND EIGENVALUE CODES FOR KINETIC TOROIDAL PLASMA INSTABILITIES

机译:动力学环状等离子体失稳的初始值和特征值码的比较

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摘要

In plasma physics, linear instability calculations can be implemented either as initial value calculations or as eigenvalue calculations. Here, comparisons between comprehensive linear gyrokinetic calculations employing the ballooning formalism for high-n (toroidal mode number) toroidal instabilities are described. One code implements an initial value calculation on a grid using a Lorentz collision operator and the other implements an eigenvalue calculation with basis functions using a Krook collision operator. An electrostatic test case with artificial parameters for the toroidal drift mode destabilized by the combined effects of trapped particles and an ion temperature gradient has been carefully analyzed both in the collisionless limit and with varying collisionality. Good agreement is found. Results from applied studies using parameters from the Tokamak Fusion Test Reactor (TFTR) experiment are also compared. [References: 10]
机译:在等离子体物理学中,线性不稳定性计算可以实现为初始值计算或特征值计算。在此,描述了针对高n(环模数)环面不稳定性采用膨胀形式的综合线性陀螺动力学计算之间的比较。一种代码使用Lorentz碰撞算子在网格上实现初始值计算,另一种代码使用Krook碰撞算子通过基函数实现特征值计算。在无碰撞极限和变化的碰撞性下,已经仔细分析了带有人工参数的环形漂移模式的静电测试用例,该参数由于被捕获的粒子和离子温度梯度的共同作用而不稳定。找到良好的协议。还比较了使用托卡马克聚变测试反应堆(TFTR)实验参数进行的应用研究得出的结果。 [参考:10]

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