The openings on aircraft structures can be modeled from an aerodynamical point of view as lid-driven cavities (LDC). This paper aims to show the primary verification and validation (V&V) process in computational fluid dynamics (CFD, and to investigate the influences of numerical settings on the efficiency and accuracy for solving the LDC problem.

    Design/methodology/approach

    To dig into the details of CFD approaches, this paper outlines the design, implementation, V&V and results of an efficient explicit algorithm. The parametric study is performed thoroughly focusing on various iteration methods, grid density discretization terms and Reynolds number effects.

    Findings

    This study parameterized the numerical implementation which provides empirical insights into how computational accuracy and efficiency are affected by changing numerical settings. At a low Reynolds number (not over 1,000), the time-derivative preconditioning is necessary, and k = 0.1 can be the optimal value to guarantee the efficiency, as well as the stability. A larger artificial viscosity (c = 1/16) would relieve the calculating oscillation issue but proportionally increase the discretization error. Furthermore, the iteration method and the mesh quality are two key factors that affect the convergence efficiency, thus need to be selected “wisely”.

    Practical implications

    The study shows how numerical implementation can enhance an accurate and efficient solution. This workflow can be used to determine the best parameter settings whenever CFD researchers applying this LDC problem as a complementary design tool for testing newly developed solvers.

    Originality/value

    The studied LDC problem is representative of CFD analysis in real aircraft structures. These numerical simulations provide a cost-effective and convenient tool to understand the parameter sensitivity, solution receptivity and physics of the CFD process.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Parametric and V&V study in a fundamental CFD process: revisiting the lid-driven cavity flow


    Contributors:

    Published in:

    Publication date :

    2021-12-24


    Size :

    1 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Parametric Study of Cavity Flow

    Holifield, Laura / Poggie, Jonathan / Blaisdell, Gregory A. | AIAA | 2022


    Parametric Study of Cavity Flow

    Holifield, Laura / Poggie, Jonathan / Blaisdell, Gregory A. | TIBKAT | 2022


    Revisiting the empirical fundamental relationship

    Coifman, Benjamin | Elsevier | 2014


    Revisiting the empirical fundamental relationship

    Coifman, Benjamin | Online Contents | 2014