Analysis Of Weakly Compressible Turbulence Using Symmetry Methods And Direct Numerical Simulation
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Author | : Raphael Gotthard Harald Arlitt |
Publisher | : Cuvillier Verlag |
Total Pages | : 221 |
Release | : 2005 |
Genre | : |
ISBN | : 3865373461 |
Download Analysis of Weakly Compressible Turbulence Using Symmetry Methods and Direct Numerical Simulation Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 0 |
Release | : 2000 |
Genre | : |
ISBN | : |
Download Weakly Compressible Descriptions of Turbulence in Compressible Flows Book in PDF, Epub and Kindle
Weakly compressible asymptotlcs and direct numerical simulation are used to investigate the effects of compressibility or high speed turbulent shear layers. The asymptotic analysis leads to a decomposition procedure that can be used to approximately determine the acoustic and nonacoustic components of a compressible flow. In boundary layers, it is found that the acoustic fluctuations are only weakly coupled to the nonacoustic, so equations describing only the nonacoustic fluctuations ((incompressible, variable density) would provide a good description of the turbulence.
Author | : R. Verstappen |
Publisher | : |
Total Pages | : 12 |
Release | : 2001 |
Genre | : |
ISBN | : |
Download Direct Numerical Simulation of Turbulence Using Symmetry-Preserving Discretization Book in PDF, Epub and Kindle
We propose to perform turbulent flow simulations in such a manner that the difference operators do have the same symmetry properties as the underlying differential operators, i.e. the convective operator is represented by a skew-symmetric matrix and the diffusive operator is approximated by a symmetric, positive-definite matrix. Such a symmetry-preserving discretization of the Navier-Stokes equations is stable on any grid, and conserves the total mass, momentum and kinetic energy (when the physical dissipation is turned off). Its accuracy is tested for a turbulent channel flow at Re--5,600 (based on the channel width and the mean bulk velocity) by comparing the results to those of physical experiments and previous numerical studies. This comparison shows that with a fourth-order, symmetry-preserving method a 64 x 64 x 32 grid suffices to perform an accurate direct numerical simulation.
Author | : Jörg Volkmann |
Publisher | : Cuvillier Verlag |
Total Pages | : 153 |
Release | : 2007 |
Genre | : |
ISBN | : 3867274223 |
Download Exhaust Systems' Models Investigation by Theoretical Group Methods Book in PDF, Epub and Kindle
Author | : Frank Freikamp |
Publisher | : Cuvillier Verlag |
Total Pages | : 139 |
Release | : 2008 |
Genre | : |
ISBN | : 3867278172 |
Download Towards Multi-cycle Simulation of In-cylinder Flow and Combustion Book in PDF, Epub and Kindle
Author | : Institute for Computer Applications in Science and Engineering |
Publisher | : |
Total Pages | : 36 |
Release | : 1990 |
Genre | : |
ISBN | : |
Download The Analysis and Simulation of Compressible Turbulence Book in PDF, Epub and Kindle
Author | : Paul Durbin |
Publisher | : Elsevier |
Total Pages | : 554 |
Release | : 2021-07-24 |
Genre | : Technology & Engineering |
ISBN | : 0128208902 |
Download Advanced Approaches in Turbulence Book in PDF, Epub and Kindle
Advanced Approaches in Turbulence: Theory, Modeling, Simulation and Data Analysis for Turbulent Flows focuses on the updated theory, simulation and data analysis of turbulence dealing mainly with turbulence modeling instead of the physics of turbulence. Beginning with the basics of turbulence, the book discusses closure modeling, direct simulation, large eddy simulation and hybrid simulation. The book also covers the entire spectrum of turbulence models for both single-phase and multi-phase flows, as well as turbulence in compressible flow. Turbulence modeling is very extensive and continuously updated with new achievements and improvements of the models. Modern advances in computer speed offer the potential for elaborate numerical analysis of turbulent fluid flow while advances in instrumentation are creating large amounts of data. This book covers these topics in great detail. Covers the fundamentals of turbulence updated with recent developments Focuses on hybrid methods such as DES and wall-modeled LES Gives an updated treatment of numerical simulation and data analysis
Author | : Oleg Mikhailovich Belotserkovskii |
Publisher | : World Scientific |
Total Pages | : 489 |
Release | : 2009 |
Genre | : Science |
ISBN | : 9812833021 |
Download Constructive Modeling of Structural Turbulence and Hydrodynamic Instabilities Book in PDF, Epub and Kindle
The book provides an original approach in the research of structural analysis of free developed shear compressible turbulence at high Reynolds number on the base of direct numerical simulation (DNS) and instability evolution for ideal medium (integral conservation laws) with approximate mechanism of dissipation (FLUX dissipative monotone OC upwindOCO difference schemes) and does not use any explicit sub-grid approximation and semi-empirical models of turbulence. Convective mixing is considered as a principal part of conservation law.
Author | : Vincent Gregory Weirs |
Publisher | : |
Total Pages | : 318 |
Release | : 1998 |
Genre | : |
ISBN | : |
Download A Numerical Method for the Direct Simulation of Compressible Turbulence Book in PDF, Epub and Kindle
Author | : Institute for Computer Applications in Science and Engineering |
Publisher | : |
Total Pages | : 28 |
Release | : 1993 |
Genre | : |
ISBN | : |
Download Pseudospectral Simulation of Compressible Turbulence Using Logarithmic Variables Book in PDF, Epub and Kindle