A mass-conservative characteristic splitting mixed element method for saltwater intrusion problem


Authors

Jiansong Zhang - Department of Applied Mathematics, China University of Petroleum, Qingdao 266580, China. Yuezhi Zhang - Department of Applied Mathematics, China University of Petroleum, Qingdao 266580, China. Zhaohui Liu - Department of Applied Mathematics, China University of Petroleum, Qingdao 266580, China.


Abstract

A new characteristic mixed finite element method is developed for solving saltwater intrusion problem. In this algorithm, the splitting mixed finite element (SMFE) method is applied for solving the parabolic-type water head equation, and the mass-conservative characteristic (MCC) finite element method is applied for solving the convection-diffusion type concentration equation. The application of the splitting mixed element method results in a symmetric positive definite coefficient matrix of the mixed element system and separating the flux equation from the water head equation. While the mass-conservative characteristic finite element method does well in handling convection-dominant diffusion problem and keeps mass balance. The convergence of this method is considered and the optimal \(L^2\)-norm error estimate is also derived.


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ISRP Style

Jiansong Zhang, Yuezhi Zhang, Zhaohui Liu, A mass-conservative characteristic splitting mixed element method for saltwater intrusion problem, Journal of Nonlinear Sciences and Applications, 10 (2017), no. 11, 6102--6118

AMA Style

Zhang Jiansong, Zhang Yuezhi, Liu Zhaohui, A mass-conservative characteristic splitting mixed element method for saltwater intrusion problem. J. Nonlinear Sci. Appl. (2017); 10(11):6102--6118

Chicago/Turabian Style

Zhang, Jiansong, Zhang, Yuezhi, Liu, Zhaohui. "A mass-conservative characteristic splitting mixed element method for saltwater intrusion problem." Journal of Nonlinear Sciences and Applications, 10, no. 11 (2017): 6102--6118


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