Wall-Modeled Large-Eddy Simulations of a Multistage High-Pressure Compressor

Wall-modeled large-eddy simulations of the HIFiRE-2 scramjet

Wall-layer Models for Large-eddy Simulations

■ Abstract Because the cost of large-eddy simulations (LES) of wall-bounded flows that resolve all the important eddies depends strongly on the Reynolds number, methods to bypass the wall layer are required to perform high-Reynolds-number LES at a reasonable cost. In this paper the available methodologies are reviewed, and their ranges of applicability are highlighted. Various unresolved issues...

Wall-modeled large-eddy simulation of a separated flow over the NASA wall-mounted hump

Wall-modeled large-eddy simulation (WMLES) attempts to provide a predictive but affordable framework for LES by modeling the effect of the computationally demanding inner-layer structures on the outer-layer flow. The grids employed in LES are designed to resolve the outer layer only, thereby reducing the computational cost of LES significantly to affordable levels. The saving in the computation...

Aero-optical Predictions of High-reynolnds Number Flows Using Wall-modeled Large-eddy Simulation

by Mohammed S. Kamel Reliable prediction of optical wavefront distortions induced by compressible turbulent flow surrounding an aperture is crucial to the development of airborne laser systems. Large-eddy simulation (LES) with a wall model provides a promising highfidelity simulation method for high-Reynolds-number aero-optical flows by avoiding the severe near-wall resolution requirement. In t...

Large-eddy simulation of a compressor rotor

Wall-modeled large-eddy simulation is applied to a transonic axial compressor rotor (NASA Rotor 37). The simulation results show a significant improvement over fully turbulent RANS in the prediction of the overall performance, mainly by capturing boundary layer transition on the blade. Sensitivity of the result to the end-wall boundary conditions (isothermal/adiabatic walls) and the inflow prof...