Domain Decomposition Methods for Space Fractional Partial Differential Equations
Provides a scalable solver for space fractional PDEs, which are computationally challenging due to nonlocality.
Proposed a two-level additive Schwarz preconditioner for finite element discretizations of space fractional PDEs, achieving a condition number bound of C(1+H/δ). Numerical results confirm the theory.
In this paper, a two-level additive Schwarz preconditioner is proposed for solving the algebraic systems resulting from the finite element approximations of space fractional partial differential equations (SFPDEs). It is shown that the condition number of the preconditioned system is bounded by C(1+H/δ), where H is the maximum diameter of subdomains and δis the overlap size among the subdomains. Numerical results are given to support our theoretical findings.