The objective of this viewgraph presentation is to evaluate turbulence models for integrated aircraft components such as the forebody, wing, inlet, diffuser, nozzle, and afterbody. The one-equation models have replaced the algebraic models as the baseline turbulence models. The Spalart-Allmaras one-equation model consistently performs better than the Baldwin-Barth model, particularly in the log-layer and free shear layers. Also, the Sparlart-Allmaras model is not grid dependent like the Baldwin-Barth model. No general turbulence model exists for all engineering applications. The Spalart-Allmaras one-equation model and the Chien k-epsilon models are the preferred turbulence models. Although the two-equation models often better predict the flow field, they may take from two to five times the CPU time. Future directions are in further benchmarking the Menter blended k-w/k-epsilon and algorithmic improvements to reduce CPU time of the two-equation model.


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    Title :

    The applicability of turbulence models to aerodynamic and propulsion flowfields at McDonnell-Douglas Aerospace


    Contributors:
    Kral, Linda D. (author) / Ladd, John A. (author) / Mani, Mori (author)


    Publication date :

    1995-03-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English