Multi-dimensional gyrokinetic parameter studies based on eigenvalue computations
Multi-dimensional gyrokinetic parameter studies based on eigenvalue computations
复制标题
基于特征值计算的多维回旋参数研究
DOI:
10.1016/j.cpc.2011.12.018
复制
发表时间:
2012
期刊:
影响因子:
--
通讯作者:
F. Jenko
中科院分区:
文献类型:
--
作者:
F. Merz;C. Kowitz;E. Romero;J. Román;F. Jenko
Plasma microinstabilities, which can be described in the framework of the linear gyrokinetic equations, are routinely computed in the context of stability analyses and transport predictions for magnetic confinement fusion experiments. The GENE code, which solves the gyrokinetic equations, has been coupled to the SLEPc package for an efficient iterative, matrix-free, and parallel computation of rightmost eigenvalues. This setup is presented, including the preconditioner which is necessary for the newly implemented Jacobi–Davidson solver. The fast computation of instabilities at a single parameter set is exploited to make parameter scans viable, that is to compute the solution at many points in the parameter space. Several issues related to parameter scans are discussed, such as an efficient parallelization over parameter sets and subspace recycling.
DOI:
10.1137/1.9780898718003
发表时间:
2003-05
期刊:
--
影响因子:
--
作者:
Y. Saad
通讯作者:
Y. Saad