H. Alcin, B. Koobus, O. Allain and A. Dervieux Efficiency and scalability of a two-level Schwarz algorithm for incompressible and compressible flows International Journal for Numerical Methods in Fluids 72
Deflation and balancing-decomposition methods built on coarse-grid bases are studied. They are combined with an additive Schwarz domain decomposition method. Application to a compressible flow calculation shows a factor two reduction in CPU.
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