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 modeling framework. The differential Reynolds stress model is the model that has been coupled with the 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 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 prolate spheroid and the DLR-F4 wing-body geometry. The comparisons show that the 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 in conjunction with the eddy-viscosity model.
Extension of a Reynolds-Stress-Based Transition Transport Model for Crossflow Transition
Journal of Aircraft ; 55 , 4 ; 1641-1654
2018-03-20
14 pages
Article (Journal)
Electronic Resource
English