Presents direct numerical simulation (DNS) and large-eddy simulation (LES) approaches for simulating turbulent flow. Explores the balance between reduction of information content in the smoothed representation on the one hand, while retaining accurate predictions in a given application area on the other. Chapters 1-9 focus on subgrid modeling and furnish connections with turbulence theory. Chapters 10-16 are dedicated to physical and numerical aspects arising from a variety of direct- and large-eddy simulations. Specific topics include the spatial velocity increment as a tool for SGS modeling, the tensor-diffusivity mixed model, and the Navier-Stokes-alpha model. The book is not indexed. Geurts is affiliated with the University of Twente and the University of London. Annotation c. Book News, Inc., Portland, OR (booknews.com)