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首页> 外文期刊>Computers & Fluids >Comparison of different solution algorithms for collocated method of MCIM to calculate steady and unsteady incompressible flows on unstructured grids
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Comparison of different solution algorithms for collocated method of MCIM to calculate steady and unsteady incompressible flows on unstructured grids

机译：MCIM并置方法计算非结构化网格上稳态和非稳态不可压缩流的不同解决方案算法的比较

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摘要

In this paper, the collocated method of MCIM (Mass Corrected Interpolation Method) is employed for solving two-dimensional incompressible flows on unstructured grid systems. A control-volume-based finite element (CVFEM) approach has been taken in which conservation equations are formed for each control volume throughout the solution domain. In this study, three different algorithms are proposed and investigated. In the first algorithm a fully coupled formulation is used, however in the second algorithm a segregated approach without pressure correction is employed. In the third solution algorithm, the scheme of MCIM is implemented to SIMPLE-like segregated algorithm. The linear system of equations obtained in these algorithms is solved using a direct sparse solver. The accuracy and performance of the proposed algorithms are demonstrated by solving different steady and unsteady benchmark problems.
机译：本文采用并置MCIM（质量校正插值方法）求解非结构网格系统上的二维不可压缩流。已经采用了基于控制量的有限元（CVFEM）方法，其中在整个求解域中为每个控制量形成了守恒方程。在这项研究中，提出并研究了三种不同的算法。在第一种算法中，使用了完全耦合的公式，但是在第二种算法中，采用了没有压力校正的隔离方法。在第三种解决方案算法中，将MCIM方案实现为类似于SIMPLE的分离算法。在这些算法中获得的线性方程组是使用直接稀疏求解器求解的。通过解决不同的稳态和非稳态基准问题证明了所提算法的准确性和性能。

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