PPT-LES of Turbulent Flows: Lecture 8

ME EN 7960008 Prof Rob Stoll Department of Mechanical Engineering University of Utah Spring 2011 Scale Separation We discussed LES in a very generic way to this point Resolve only the largest energy containing scales. : . Lecture 8. (ME EN 7960-003). Prof.. Rob Stoll. Department of Mechanical Engineering. University of Utah. Fall 2014. LES and numerical methods. LES requires that the filtered equations of motion (see Lectures 5 and 6) be solved on a numerical grid.. : Lecture 12. (ME EN 7960-008). Prof.. Rob Stoll. Department of Mechanical Engineering. University of Utah. Spring 2011. Turbulence modeling (alternative strategies). . Filtered Density Functions (FDF). : Lecture 5. (ME EN 7960-003). Prof.. Rob Stoll. Department of Mechanical Engineering. University of Utah. Fall 2014. The LES filter can be used to decompose the velocity field into resolved and subfilter scale (SFS) components. . and. idealized glass . Shin-. ichi. . Sasa. 　（. Kyoto University). . . . 　. 　　　　　　　　　　　　 　　. spectra. in non-. Abelian. . gauge. . theories. Sebastian Scheffler,. TU Darmstadt,. 30 . January. 2009,. ¢. (2009) Heidelberg. Journal . references. : . J. Berges, S. Scheffler, D. . Sexty. , PRD 77, 034504 (2008) , arXiv. Lecture 1.7 Navier – Stokes Equations 1 • In general, the flows in turbomachinery can be classified as laminar, transitional and turbulent, depending on the relative magnitudes of inert EFD Final Project. Terrence Hess. Daniel Alexander. Mohammad Khan. Neil Lareau. 1. 21 Apr. 2011. Project Objectives . Characterize the diurnal evolution of turbulent statistics. for . two dissimilar 24 hour periods. LAMINAR FLOW . V.S. TURBULENT FLOW. This shows turbulence because it’s all over the place and rough. This part of the picture shows Laminar Flow because it runs very smoothly. 1. (ME EN 7960-. 003). Prof. Rob Stoll. Department of Mechanical Engineering. University of Utah. Fall 2014. Vorticity: or. Turbulent Flow Properties. Why study turbulence? Most real flows in engineering applications are turbulent. . : Lecture. 7. (ME EN 7960-008). Prof.. Rob Stoll. Department of Mechanical Engineering. University of Utah. Spring 2011. Equations of Motion. . Incompressible flow:. . g. eneral scalar (. Sc. =Schmidt #). . Mark Rast. Laboratory for Atmospheric and Space Physics. Department of Astrophysical and Planetary Sciences. University of Colorado, . 1. Sandia . National Laboratories is a multi-mission laboratory managed and operated by National Technology and Engineering Solutions of  Sandia, LLC, a wholly owned subsidiary of Honeywell International,  Inc., for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-NA0003525.  SAND2017-6417C. DESCRIBE . the characteristics and flow velocity profiles of laminar flow and turbulent flow.. DEFINE . the property of viscosity.. DESCRIBE . how the viscosity of a fluid varies with temperature.. DESCRIBE . Pete Strakey, NETL. Effects of pressure and diluents on flames.. Identification of target conditions.. Overview of characteristic time and length scales.. CFD simulations of turbulent time and length scales..