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Matrix-Free Parallel Scalable Multilevel Deflation Preconditioning for Heterogeneous Time-Harmonic Wave Problems
Jinqiang Chen, Vandana Dwarka, Cornelis Vuik
We present a matrix-free parallel scalable multilevel deflation preconditioned method for heterogeneous time-harmonic wave problems. Building on the higher-order deflation precondi…
A matrix-free parallel two-level deflation preconditioner for the two-dimensional Helmholtz problems
Jinqiang Chen, Vandana Dwarka, Cornelis Vuik
We propose a matrix-free parallel two-level-deflation preconditioner combined with the Complex Shifted Laplacian preconditioner(CSLP) for the two-dimensional Helmholtz problems. Th…
A matrix-free parallel solution method for the three-dimensional heterogeneous Helmholtz equation
Jinqiang Chen, Vandana Dwarka, Cornelis Vuik
The Helmholtz equation is related to seismic exploration, sonar, antennas, and medical imaging applications. It is one of the most challenging problems to solve in terms of accurac…