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    On coarse grids simulation of compressible mixing layer flows using vorticity confinement

    , Article Journal of Fluids Engineering, Transactions of the ASME ; Volume 140, Issue 3 , 2018 ; 00982202 (ISSN) Hejranfar, K ; Ebrahimi, M ; Sadri, M ; Sharif University of Technology
    American Society of Mechanical Engineers (ASME)  2018
    In this work, the capability and performance of the vorticity confinement (VC) implemented in a high-order accurate flow solver in predicting two-dimensional (2D) compressible mixing layer flows on coarse grids are investigated. Here, the system of governing equations with incorporation of the VC in the formulation is numerically solved by the fourth-order compact finite difference scheme. To stabilize the numerical solution, a low-pass high-order filter is applied, and the nonreflective boundary conditions are used at the farfield and outflow boundaries to minimize the reflections. At first, the numerical results without applying the VC are validated by available direct numerical...