collaborators

6 papers

math.NA2025

A Third-order Conservative Semi-Lagrangian Discontinuous Galerkin Scheme For the Transport Equation on Curvilinear Unstructured Meshes

Xiaofeng Cai, Yibing Chen, Kunkai Fu +1

We develop a third-order conservative semi-Lagrangian discontinuous Galerkin (SLDG) scheme for solving linear transport equations on curvilinear unstructured triangular meshes, tai…

math.NA2025

Asymptotic-preserving conservative semi-Lagrangian discontinuous Galerkin schemes for the Vlasov-Poisson system in the quasi-neutral limit

Xiaofeng Cai, Linghui Kong, Dmitri Kuzmin +1

We discretize the Vlasov-Poisson system using conservative semi-Lagrangian (CSL) discontinuous Galerkin (DG) schemes that are asymptotic preserving (AP) in the quasi-neutral limit.…

math.NA2025

Asymptotic-preserving semi-Lagrangian discontinuous Galerkin schemes for the Boltzmann equation

Xiaofeng Cai, Zhen Hao, Liu Liu +1

In this work, we present an asymptotic-preserving semi-Lagrangian discontinuous Galerkin scheme for the Boltzmann equation that effectively handles multi-scale transport phenomena.…

math.NA2025

A high-order energy-conserving semi-Lagrangian discontinuous Galerkin method for the Vlasov-Ampere system

Xiaofeng Cai, Qingtao Li, Hongtao Liu +1

In this paper, we propose a high-order energy-conserving semi-Lagrangian discontinuous Galerkin(ECSLDG) method for the Vlasov-Ampere system. The method employs a semi-Lagrangian di…

math.NA2025

The positivity-preserving high-order semi-Lagrangian spectral volume method for Vlasov-Poisson equations

Xinyue Zhang, Xiaofeng Cai, Waixiang Cao

In this paper, a novel high order semi-Lagrangian (SL) spectral volume (SV) method is proposed and studied for nonlinear Vlasov-Poisson (VP) simulations via operator splitting. The…

math.NA2024

Runge-Kutta Discontinuous Galerkin Method Based on Flux Vector Splitting with Constrained Optimization-based TVB(D)-minmod Limiter for Solving Hyperbolic Conservation Laws

Zhengrong Xie

The flux vector splitting (FVS) method has firstly been incorporated into the discontinuous Galerkin (DG) framework for reconstructing the numerical fluxes required for the spatial…