An automated off-body Mach cone aligned structured curvilinear grid generation procedure is presented for near-field computational fluid dynamics simulations. This procedure combines output-based indicators and mesh redistribution to perform anisotropic mesh adaptation while maintaining Mach cone alignment. Automation is achieved through a novel direction-based adaptation indicator formulation. The adaptation procedure is demonstrated on the JAXA Wing Body geometry and X-59 C608 demonstrator model from the Second and Third AIAA Sonic Boom Prediction Workshops, respectively. It is demonstrated that anisotropic mesh adaptation may result in a greater than fifty percent reduction in resource usage required to achieve the same level of accuracy as uniform and user constructed Mach cone aligned grids for near-field pressure signatures, ground-level overpressure signatures, and loudness metrics.


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    Title :

    Anisotropic Mach Cone Aligned Mesh Adaptation for Low Boom Simulations


    Contributors:

    Conference:

    AIAA AVIATION Forum and Exposition ; 2023 ; San Diego, CA, US


    Publication date :

    2023-06-12


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




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