PPT-LES of Turbulent Flows

Lecture 12 ME EN 7960008 Prof Rob Stoll Department of Mechanical Engineering University of Utah Spring 2011 Turbulence modeling alternative strategies Filtered Density Functions FDF. Typically occurs when the velocity is low or the fluid is very viscous. 2 3Turbulent flow Opposite of laminar, where considerable mixing occurs, velocities are high. Laminar and Turbulent fl : . 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.. Yang . Chen. 1. , . K.H. . Luo. 1,2. 1. . Center. . for Combustion Energy, Tsinghua University, Beijing, China. 2. Department . of Mechanical Engineering, University College London, UK. 8th Trondheim Conference on CO2 Capture, Transport and Storage. . and. idealized glass . Shin-. ichi. . Sasa. 　（. Kyoto University). . . . 　. 　　　　　　　　　　　　 　　. Andy Pon, . Doug . Johnstone. ,. Michael J. Kaufman. ApJ. , submitted May 2011 . Ridge et al. (2006). Observed. (FWHM = 1.9 km / . s. ). Thermal broadening alone. (FWHM = 0.2 km / . s. ). 12. CO J = 1-0. : Lecture 7. (ME EN 7960-003). Prof.. Rob Stoll. Department of Mechanical Engineering. University of Utah. Fall 2014. Turbulence modeling (alternative strategies). So far our discussion of turbulence modeling has centered around separating the flow into resolved and . 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. 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 #). (ME EN 7960-008). Prof. Rob Stoll. Department of Mechanical Engineering. University of Utah. Spring 2011. Vorticity: or. Turbulent Flow Properties. Why study turbulence? Most real flows in engineering applications are turbulent. . (ME EN 7960-008). 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. P. Balakumar . Flow Physics and Control . Branch. NASA Langley Research Center. Symposium on Advances in Turbulence Modeling. July 13, 2017. Ann Arbor. MI. Objectives. Perform DNS/LES to compute turbulent separated flows at high Reynolds numbers.. (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.