Towards nonaxisymmetry; initial results using the Flux Coordinate Independent method in BOUT++

Autor: Shanahan, Brendan, Hill, Peter, Dudson, Ben
Rok vydání: 2016
Předmět:
Druh dokumentu: Working Paper
DOI: 10.1088/1742-6596/775/1/012012
Popis: Fluid simulation of stellarator edge transport is difficult due to the complexities of mesh generation; the stochastic edge and strong nonaxisymmetry inhibit the use of field aligned coordinate systems. The recent implementation of the Flux Coordinate Independent method for calculating parallel derivatives in BOUT++ has allowed for more complex geometries. Here we present initial results of nonaxisymmetric diffusion modelling as a step towards stellarator turbulence modelling. We then present initial (non-turbulent) transport modelling using the FCI method and compare the results with analytical calculations. The prospects for future stellarator transport and turbulence modelling are discussed.
Databáze: arXiv