Turbulent ?ows are ubiquitous in most application ?elds, ranging from  gineering to earth sciences and even life sciences. Therefore, simulation of turbulent ?ows has become a key tool in both fundamental and applied  search. The complexity of NavierStokes turbulence, which is illustrated by the fact that the number of degrees of freedom of turbulence grows faster 11/4 thanO(Re ), where Re denotes the Reynolds number, renders the Direct Numerical Simulation (DNS) of turbulence inapplicable to most ?ows of  terest. To alleviate this problem, truncated solutions in both frequency and wavenumbermaybesought,whosecomputationalcostismuchlowerandmay ideally be arbitrarily adjusted. The most suitable approach to obtain such a lowcost threedimensional unsteady simulation of a turbulent ?ow is Large EddySimulation(LES),whichwaspioneeredtocomputemeteorological?ows in the late 1950s and the early 1960s. One of the main issues raised by LES is a closure problem: because of the nonlinearity of the NavierStokes equations, the e?ect of unresolved scales must be taken into account to recover a reliable description of resolved scales of motion (Chap. 2). This need to close the governing equations of LES has certainly been the main area of investigation since the 1960s, and numerous closures,alsoreferredtoassubgridmodels,havebeenproposed. Mostexisting subgrid models have been built using simpli?ed viewsof turbulence dynamics, the main physical phenomenon taken into account being the direct kinetic  ergycascade from largeto small scales that is observed in isotropic turbulence and highReynolds fully developed turbulent ?ows. The most popular pa digm for interscale energy transfer modeling is subgrid viscosity (Chap.
About E. Garnier
Pierre Saugaut is one of the leading scientists in scientific computing (Simulation, Analysis and Modeling of Compressible Turbulent Flows), and his books are considered the most important in the field of LES theory and applications (he has been given the ONERA award for the best scientific publication in 1997,1999, 2001). He is teaching at the Pierre et Marie Curie Universite Paris. The author has published several books with Springer ("Large Eddy Simulation for Incompressible Flows", ISBN 9783540263449 "Introduction a la simulation des grandes echelles pour les ecoulements de fluide incompressible", ISBN 9783540646846 "Turbulence and Interactions", ISBN 9783642002618 "Quality and Reliability of LargeEddy Simulations", ISBN 9781402085772). He is in the Editorial/Advisory Board of the Springer Journals "Theoretical and Computational Fluid Dynamics" and "Journal of Scientific Computing".Details Book
Author  :  E. Garnier 
Publisher  :  Springer 
Data Published  :  08 March 2012 
ISBN  :  9400736703 
EAN  :  9789400736702 
Format Book  :  PDF, Epub, DOCx, TXT 
Number of Pages  :  276 pages 
Age +  :  15 years 
Language  :  English 
Rating  : 
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