{ "id": "1212.4026", "version": "v2", "published": "2012-12-17T15:36:44.000Z", "updated": "2013-10-16T03:20:08.000Z", "title": "A Class of Quadrature-Based Moment-Closure Methods with Application to the Vlasov-Poisson-Fokker-Planck System in the High-Field Limit", "authors": [ "Yongtao Cheng", "James A. Rossmanith" ], "comment": "24 pages, 5 figures", "categories": [ "math.NA", "physics.plasm-ph" ], "abstract": "Quadrature-based moment-closure methods are a class of approximations that replace high-dimensional kinetic descriptions with lower-dimensional fluid models. In this work we investigate some of the properties of a sub-class of these methods based on bi-delta, bi-Gaussian, and bi-B-spline representations. We develop a high-order discontinuous Galerkin (DG) scheme to solve the resulting fluid systems. Finally, via this high-order DG scheme and Strang operator splitting to handle the collision term, we simulate the fluid-closure models in the context of the Vlasov-Poisson-Fokker-Planck system in the high-field limit. We demonstrate numerically that the proposed scheme is asymptotic-preserving in the high-field limit.", "revisions": [ { "version": "v2", "updated": "2013-10-16T03:20:08.000Z" } ], "analyses": { "subjects": [ "65M60", "35L65", "82B40" ], "keywords": [ "quadrature-based moment-closure methods", "high-field limit", "vlasov-poisson-fokker-planck system", "replace high-dimensional kinetic descriptions", "application" ], "note": { "typesetting": "TeX", "pages": 24, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2012arXiv1212.4026C" } } }