We present a parallel fully coupled multi-level incomplete factorization preconditioner for the 3D stationary incompressible Navier-Stokes equations on a structured grid. The algorithm and software are based on the robust two-level method developed in [1]. In this paper, we identify some of the weak spots of the two-level scheme and propose remedies such as a different domain partitioning and recursive application of the method. We apply the method to the wellknown 3D lid-driven cavity benchmark problem, and demonstrate its superior robustness by comparing with a segregated SIMPLE-type preconditioner.


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    Title :

    A Staggered Grid Multi-Level ILU for steady incompressible flows


    Contributors:


    Publication date :

    2020



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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