Speaker
Description
see full abstract here
http://ocs.ciemat.es/EPS2019ABS/pdf/P2.1052.pdf
The topology of the Wendelstein 7-X edge and scrape-off-layer exhibits stochastic fields, island chains, highly varying connection lengths, and a non-uniform curvature drive for plasma turbulence. These challenges have previously inhibited successful development of a plasma fluid turbulence simulation framework. The BSTING project [1] has extended BOUT++ [2] to stellarator geometries, thereby providing the first nonlinear fluid simulation framework for stellarator geometries. Here we outline recent developments in the BSTING project, including a newly implemented curvilinear grid system suitable for stellarator edge magnetic topology, and present simulations of plasma filaments in stellarator geometries. Simulations of filaments in non-uniform drive scenarios [3], and the effects of strongly-varying connection length will also be presented. The application of these methods to Wendelstein 7-X edge scenarios will also be discussed.
[1] B. Shanahan, B. Dudson, and P. Hill, Plasma Physics and Controlled Fusion 61, 025007 (2018).
[2] B. D. Dudson, M. V. Umansky, X. Q. Xu, P. B. Snyder, and H. R. Wilson, Computer Physics
Communications 180, 1467 (2009).
[3] B. Shanahan, B. Dudson, and P. Hill, Journal of Physics: Conference Series 1125, 012018
(2018).
