This book contains the basic information required for both a person new
to the subject of large-eddy simulation and for use as a reference for the more
experienced researcher. In addition, it contains several additional items the
reader may find of special importance. The first of these items is contained in
Chapter 2, where a detailed discussion is given of vorticity, pressure, and the
velocity gradient tensor, which are quantities useful for probing the results
of a simulation – in particular looking for coherent vortices and coherent
structures. Since the approach of large-eddy simulation focuses on the largescale
motions,which are often coherent, it is important to have the appropriate
tools available to examine the simulations for such features.