Bøger af Pierre Sagaut

This book summarizes the most recent theoretical, computational and experimental results dealing with homogeneous turbulence dynamics. A large class of flows is covered: flows governed by anisotropic production mechanisms (e.g. shear flows) and flows without production but dominated by waves (e.g. homogeneous rotating or stratified turbulence). Compressible turbulent flows are also considered. In each case, main trends are illustrated using computational and experimental results, while both linear and nonlinear theories and closures are discussed. Details about linear theories (e.g. Rapid Distortion Theory and variants) and nonlinear closures (e.g. EDQNM) are provided in dedicated chapters, following a fully unified approach. The emphasis is on homogeneous flows, including several interactions (rotation, stratification, shear, shock waves, acoustic waves, and more) which are pertinent to many application fields - from aerospace engineering to astrophysics and earth sciences.

This book provides state-of-the-art results and theories in homogeneous turbulence, including anisotropy and compressibility effects with extension to quantum turbulence, magneto-hydodynamic turbulence and turbulence in non-newtonian fluids.

This book provides state-of-the-art results and theories in homogeneous turbulence, including anisotropy and compressibility effects with extension to quantum turbulence, magneto-hydodynamic turbulence and turbulence in non-newtonian fluids.

L'ouvrage présente la technique de simulation des grandes échelles. Les bases mathématiques et les hypothèses physiques employées sont rappelées. Les concepts de modélisation structurelle et de modélisation fonctionnelle sont introduits, et servent à établir une liste exhaustive, unique à ce jour, des modèles sous-maille existants. Outre la description de ces modèles, le lecteur trouvera des éléments théoriques et des détails pratiques concernant leur mise en oeuvre. L'analyse des résultats est également discutée et illustrée par des exemples concrets. L'ouvrage permettra aux novices de s'initier à la simulation des grandes échelles et aux praticiens confirmés de découvrir des aspects nouveaux ou méconnus de cette discipline.