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Large-eddy Simulations

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Large eddy simulation is a computational methodology used in fluid dynamics to model turbulent flows. It operates by directly resolving the dynamics of large-scale turbulent eddies, which are dependent on the flow geometry, while employing a subgrid-scale model to approximate the effects of smaller, more isotropic eddies. This approach offers a balance between the computational cost of fully resolving all turbulent scales (Direct Numerical Simulation) and the time-averaged approximations of Reynolds-Averaged Navier-Stokes methods, making it significant for analyzing complex, unsteady turbulent phenomena across various engineering and environmental disciplines.