Chapter 1: Numerical challenges in turbulence simulation
Robert D. Moser Oden Institute for Computational Engineering and Sciences, and Walker Department of Mechanical Engineering, University of Texas at Austin, Austin, TX, United States
Abstract
Turbulence has a profound effect on the flows in which it occurs, and yet it has proved extremely difficult to model its effects. However, the Navier–Stokes equations are a highly reliable model of turbulence, we need only solve them with sufficient accuracy for the detailed three-dimensional time-dependent turbulent flow field. While such direct numerical simulations (DNS) are generally too expensive to use as an engineering prediction tool, they have proven to be invaluable to the study of the turbulence ...
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