Results from the Fifth AIAA CFD Drag Prediction Workshop (DPW-V) are presented. As with past workshops, numerical calculations are performed using industry-relevant geometry, methodology, and test cases. This workshop focused on force/moment predictions for the NASA Common Research Model wing-body configuration, including a grid refinement study and an optional buffet study. The grid refinement study used a common grid sequence derived from a multiblock topology structured grid. Six levels of refinement were created resulting in grids ranging from 0.64x10(exp 6) to 138x10(exp 6) hexahedra - a much larger range than is typically seen. The grids were then transformed into structured overset and hexahedral, prismatic, tetrahedral, and hybrid unstructured formats all using the same basic cloud of points. This unique collection of grids was designed to isolate the effects of grid type and solution algorithm by using identical point distributions. This study showed reduced scatter and standard deviation from previous workshops. The second test case studied buffet onset at M=0.85 using the Medium grid (5.1x106 nodes) from the above described sequence. The prescribed alpha sweep used finely spaced intervals through the zone where wing separation was expected to begin. Some solutions exhibited a large side of body separation bubble that was not observed in the wind tunnel results. An optional third case used three sets of geometry, grids, and conditions from the Turbulence Model Resource website prepared by the Turbulence Model Benchmarking Working Group. These simple cases were intended to help identify potential differences in turbulence model implementation. Although a few outliers and issues affecting consistency were identified, the majority of participants produced consistent results.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Summary of Data from the Fifth AIAA CFD Drag Prediction Workshop



    Conference:

    51st AIAA Aerospace Sciences Meeting ; 2013 ; Grapevine, TX, United States


    Publication date :

    2013-01-07


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :


    Summary of Data from the Fifth AIAA CFD Drag Prediction Workshop

    Levy, D. / Laflin, K. / Vassberg, J. et al. | British Library Conference Proceedings | 2013


    Summary of Data from the Fifth AIAA CFD Drag Prediction Workshop

    Levy, David / Laflin, Kelly / Vassberg, John et al. | AIAA | 2013



    Summary Data from the Seventh AIAA CFD Drag Prediction Workshop

    Tinoco, Ed / Brodersen, Olaf P. / Keye, Stefan et al. | TIBKAT | 2023