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Wall-modeled large-eddy simulations (WMLES) are conducted for the flow overthe Sandia Axisymmetric Transonic Bump (ATB) at bump chord Reynolds number, Re= 1x10^6 and Mach number, Ma = 0.875. Utilizing various subgrid-scale and wallmodels, comparisons are made between the simulations and experiments forquantities of engineering interest, such as the skin friction coefficient (Cf)and wall pressure coefficient (Cp) data. Favorable agreements between thesimulations and the experiments are achieved, with the simulations predictingthe shock location, size, and strength of the separation bubble with reasonableaccuracy. In particular, it was established that the realism of the incomingturbulent boundary layer onto the bump is very important for the correct androbust prediction of the skin friction in the upstream region of the bump.Furthermore, a resolution limitation on the predictive capability of theequilibrium wall model in the favorable pressure gradient region isestablished. Finally, preliminary results utilizing a pressure-gradientinclusive modification to the equilibrium wall model predicts the skin frictionwithin the separation bubble at affordable resolutions

Wall modeled large-eddy simulations of flow over the Sandia Axisymmetric Transonic Bump