Two crossflow transition prediction approaches, the local C1-based approach and the local helicity-based approach, have been implemented into a Reynolds-stress-based transition transport model of the γ - R e θ t modeling framework. The differential Reynolds stress model is the SSG / LRR - ω model that has been coupled with the γ - R e θ t model. The whole framework of the coupled model, including the crossflow extensions, is presented in detail. A grid sensitivity study for crossflow transition prediction was conducted. In addition, the influence of the numerical scheme on the computational results is discussed. The new Reynolds-stress-based transition model is compared with the γ - R e θ t model coupled to the SST two-equation eddy-viscosity turbulence model including the two crossflow extensions for the NLF (2)-0415 infinite swept wing, the DLR 6 1 prolate spheroid and the DLR-F4 wing-body geometry. The comparisons show that the γ - R e θ t - CF Reynolds-stress-based transition model can yield very accurate results, which, in terms of the predicted transition onset, are sometimes better than those of the γ - R e θ t - CF in conjunction with the eddy-viscosity model.


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    Title :

    Extension of a Reynolds-Stress-Based Transition Transport Model for Crossflow Transition


    Contributors:

    Published in:

    Journal of Aircraft ; 55 , 4 ; 1641-1654


    Publication date :

    2018-03-20


    Size :

    14 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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