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Volume 22, Issue 3
A Cell-Centered Finite Element Method with Imposed Flux Continuity and Streamline Upwind Technique for Advection-Diffusion Problems on General Meshes

Ong Thanh Hai, Nguyen T. Hong Thai & Tran Thien Thanh

Int. J. Numer. Anal. Mod., 22 (2025), pp. 401-431.

Published online: 2025-03

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  • Abstract

We extend the cell-centered finite element method (CCFE) [1] with imposed flux continuity and streamline upwind technique to solve the advection-diffusion equations with anisotropic and heterogeneous diffusivity and a convection-dominated regime on general meshes. The scheme is cell-centered in the sense that the solution is computed by cell unknowns of the primal mesh. From general meshes, the method is constructed by the dual meshes and their triangular submeshes. The scheme gives auxiliary edge unknowns interpolated by the multipoint fluid approximation technique to obtain the local continuity of numerical fluxes across the interfaces. In addition, the scheme uses piecewise linear functions combined with a streamline upwind technique on the dual submesh in order to stabilize the numerical solutions and eliminate the spurious oscillations. The coercivity, the strong and dual consistency, and the convergence properties of this method are shown in the rigorous theoretical framework. Numerical results are carried out to highlight accuracy and computational cost.

  • AMS Subject Headings

65N12, 65N30, 76R05, 76R50

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COPYRIGHT: © Global Science Press

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@Article{IJNAM-22-401, author = {Hai , Ong ThanhThai , Nguyen T. Hong and Thanh , Tran Thien}, title = {A Cell-Centered Finite Element Method with Imposed Flux Continuity and Streamline Upwind Technique for Advection-Diffusion Problems on General Meshes}, journal = {International Journal of Numerical Analysis and Modeling}, year = {2025}, volume = {22}, number = {3}, pages = {401--431}, abstract = {

We extend the cell-centered finite element method (CCFE) [1] with imposed flux continuity and streamline upwind technique to solve the advection-diffusion equations with anisotropic and heterogeneous diffusivity and a convection-dominated regime on general meshes. The scheme is cell-centered in the sense that the solution is computed by cell unknowns of the primal mesh. From general meshes, the method is constructed by the dual meshes and their triangular submeshes. The scheme gives auxiliary edge unknowns interpolated by the multipoint fluid approximation technique to obtain the local continuity of numerical fluxes across the interfaces. In addition, the scheme uses piecewise linear functions combined with a streamline upwind technique on the dual submesh in order to stabilize the numerical solutions and eliminate the spurious oscillations. The coercivity, the strong and dual consistency, and the convergence properties of this method are shown in the rigorous theoretical framework. Numerical results are carried out to highlight accuracy and computational cost.

}, issn = {2617-8710}, doi = {https://doi.org/10.4208/ijnam2025-1018}, url = {http://global-sci.org/intro/article_detail/ijnam/23885.html} }
TY - JOUR T1 - A Cell-Centered Finite Element Method with Imposed Flux Continuity and Streamline Upwind Technique for Advection-Diffusion Problems on General Meshes AU - Hai , Ong Thanh AU - Thai , Nguyen T. Hong AU - Thanh , Tran Thien JO - International Journal of Numerical Analysis and Modeling VL - 3 SP - 401 EP - 431 PY - 2025 DA - 2025/03 SN - 22 DO - http://doi.org/10.4208/ijnam2025-1018 UR - https://global-sci.org/intro/article_detail/ijnam/23885.html KW - Advection-diffusion equations, anisotropic and heterogeneous diffusion, convection-dominated regime, cell-centered schemes, and convergence analysis. AB -

We extend the cell-centered finite element method (CCFE) [1] with imposed flux continuity and streamline upwind technique to solve the advection-diffusion equations with anisotropic and heterogeneous diffusivity and a convection-dominated regime on general meshes. The scheme is cell-centered in the sense that the solution is computed by cell unknowns of the primal mesh. From general meshes, the method is constructed by the dual meshes and their triangular submeshes. The scheme gives auxiliary edge unknowns interpolated by the multipoint fluid approximation technique to obtain the local continuity of numerical fluxes across the interfaces. In addition, the scheme uses piecewise linear functions combined with a streamline upwind technique on the dual submesh in order to stabilize the numerical solutions and eliminate the spurious oscillations. The coercivity, the strong and dual consistency, and the convergence properties of this method are shown in the rigorous theoretical framework. Numerical results are carried out to highlight accuracy and computational cost.

Hai , Ong ThanhThai , Nguyen T. Hong and Thanh , Tran Thien. (2025). A Cell-Centered Finite Element Method with Imposed Flux Continuity and Streamline Upwind Technique for Advection-Diffusion Problems on General Meshes. International Journal of Numerical Analysis and Modeling. 22 (3). 401-431. doi:10.4208/ijnam2025-1018
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