Numerical comparisons of gyrokinetic multi-water-bag models. (English) Zbl 1349.82075
Summary: In this paper we present two new codes devoted to the study of ion temperature gradient (ITG) driven plasma turbulence in cylindrical geometry using a drift-kinetic multi-water-bag model for ion dynamics. Both codes were developed to complement the Runge-Kutta semi-lagrangian multi-water-bag code GMWB3D-SLC described in [the second author and P. Bertrand, ibid. 228, No. 11, 3973–3995 (2009; Zbl 1273.82071)]. The CYLGYR code is an eigenvalue solver performing linear stability analysis from given mean radial profiles. It features three resolution schemes and three parallel velocity response models (fluid, multi-water-bag, continuous Maxwellian). The QUALIMUWABA quasilinear code is an initial value code allowing the study of zonal flow influence on drift-waves dynamics. Cross-validation test performed between the three codes show good agreement on both temporal and spatial characteristics of unstable modes in the linear growth phase.
MSC:
| 82C80 | Numerical methods of time-dependent statistical mechanics (MSC2010) |
| 82D10 | Statistical mechanics of plasmas |
Citations:
Zbl 1273.82071References:
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