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Author : Antti Hellsten
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Explicit Algebraic Reynolds Stress Modelling in Decelerating and Separating Flows written by Antti Hellsten and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bernhard Eisfeld
Publisher : Springer
ISBN 13 : 331915639X
Total Pages : 106 pages
Book Rating : 4.3/5 (191 download)
Download or read book Differential Reynolds Stress Modeling for Separating Flows in Industrial Aerodynamics written by Bernhard Eisfeld and published by Springer. This book was released on 2015-03-24 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents recent progress in the application of RANS turbulence models based on the Reynolds stress transport equations. A variety of models has been implemented by different groups into different flow solvers and applied to external as well as to turbo machinery flows. Comparisons between the models allow an assessment of their performance in different flow conditions. The results demonstrate the general applicability of differential Reynolds stress models to separating flows in industrial aerodynamics.
Author : Donald P. Rizzetta
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Evaluation of Algebraic Reynolds Stress Models for Separated High-speed Flows written by Donald P. Rizzetta and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sung-Uk Choi
Publisher :
ISBN 13 :
Total Pages : 116 pages
Book Rating : 4.8/5 (28 download)
Download or read book Reynolds Stress Modeling of Turbulent Open-channel Flows written by Sung-Uk Choi and published by . This book was released on 2009 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents numerical simulations of three-dimensional turbulent open-channel flows. In the simulations, Reynolds-averaged Navier-Stokes equations are solved with the Reynolds stress model for turbulence closure. The overall solution strategy is the SIMPLER algorithm, and the power-law scheme is used to discretise the convection and diffusion terms in the governing equations. The Reynolds stress model is applied to rectangular open-channel flows, partly-vegetated open-channel flows, and compound open-channel flows. The simulated mean flow and turbulence structures including streamwise mean velocity, secondary currents, turbulence intensity, and Reynolds stress, are provided and compared with measure data in the literature. As shown in this book, these comparisons reveal that the proposed Reynolds stress model successfully predicts the mean flow and turbulence statistics of turbulent open-channel flows.
Author : Tsan-Hsing Shih
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.:/5 (31 download)
Download or read book A New Reynolds Stress Algebraic Equation Model written by Tsan-Hsing Shih and published by . This book was released on 1994 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Tsan-Hsing Shih
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (321 download)
Download or read book A New Reynolds Stress Algebraic Equation Model written by Tsan-Hsing Shih and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A general turbulent constitutive relation is directly applied to propose a new Reynolds stress algebraic equation model. In the development of this model, the constraints based on rapid distortion theory and realizability (i.e. the positivity of the normal Reynolds stresses and the Schwarz' inequality between turbulent velocity correlations) are imposed. Model coefficients are calibrated using well-studied basic flows such as homogeneous shear flow and the surface flow in the inertial sublayer. The performance of this model is then tested in complex turbulent flows including the separated flow over a backward-facing step and the flow in a confined jet. The calculation results are encouraging and point to the success of the present model in modeling turbulent flows with complex geometries.
Author : Sharath Subba Rao Girimaji
Publisher :
ISBN 13 :
Total Pages : 146 pages
Book Rating : 4.E/5 ( download)
Download or read book An Algebraic Stress Model for Curved Flows written by Sharath Subba Rao Girimaji and published by . This book was released on 1986 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Silhouette of Left Profile Lincoln written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Silhouette has plastic frame and cover with paper backing.
Author : Ville Hämäläinen
Publisher :
ISBN 13 : 9789512256051
Total Pages : 100 pages
Book Rating : 4.2/5 (56 download)
Download or read book Implementing an Explicit Algebraic Reynolds Stress Model Into the Three-dimensional FINFLO Flow Solver written by Ville Hämäläinen and published by . This book was released on 2001 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Werner Haase
Publisher : Springer Science & Business Media
ISBN 13 : 3540395075
Total Pages : 445 pages
Book Rating : 4.5/5 (43 download)
Download or read book FLOMANIA - A European Initiative on Flow Physics Modelling written by Werner Haase and published by Springer Science & Business Media. This book was released on 2006-10-02 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume offers of the EU-funded 5th Framework project, FLOMANIA (Flow Physics Modelling – An Integrated Approach). The book presents an introduction to the project, exhibits partners’ methods and approaches, and provides comprehensive reports of all applications treated in the project. A complete chapter is devoted to a description of turbulence models used by the partners together with a section on lessons learned, accompanied by a comprehensive list of references.
Author : Aamir Shabbir
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.:/5 (31 download)
Download or read book Critical Assessment of Reynolds Stress Turbulence Models Using Homogeneous Flows written by Aamir Shabbir and published by . This book was released on 1992 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Charles Hirsch
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Modeling of Complex Internal Flows with Reynolds Stress Algebraic Equation Model written by Charles Hirsch and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : László Könözsy
Publisher : Springer
ISBN 13 : 3030135438
Total Pages : 141 pages
Book Rating : 4.0/5 (31 download)
Download or read book A New Hypothesis on the Anisotropic Reynolds Stress Tensor for Turbulent Flows written by László Könözsy and published by Springer. This book was released on 2019-02-26 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a mathematical insight--including intermediate derivation steps--into engineering physics and turbulence modeling related to an anisotropic modification to the Boussinesq hypothesis (deformation theory) coupled with the similarity theory of velocity fluctuations. Through mathematical derivations and their explanations, the reader will be able to understand new theoretical concepts quickly, including how to put a new hypothesis on the anisotropic Reynolds stress tensor into engineering practice. The anisotropic modification to the eddy viscosity hypothesis is in the center of research interest, however, the unification of the deformation theory and the anisotropic similarity theory of turbulent velocity fluctuations is still missing from the literature. This book brings a mathematically challenging subject closer to graduate students and researchers who are developing the next generation of anisotropic turbulence models. Indispensable for graduate students, researchers and scientists in fluid mechanics and mechanical engineering.
Author : László Könözsy
Publisher : Springer Nature
ISBN 13 : 3030606031
Total Pages : 517 pages
Book Rating : 4.0/5 (36 download)
Download or read book A New Hypothesis on the Anisotropic Reynolds Stress Tensor for Turbulent Flows written by László Könözsy and published by Springer Nature. This book was released on 2020-12-01 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: This self-contained, interdisciplinary book encompasses mathematics, physics, computer programming, analytical solutions and numerical modelling, industrial computational fluid dynamics (CFD), academic benchmark problems and engineering applications in conjunction with the research field of anisotropic turbulence. It focuses on theoretical approaches, computational examples and numerical simulations to demonstrate the strength of a new hypothesis and anisotropic turbulence modelling approach for academic benchmark problems and industrially relevant engineering applications. This book contains MATLAB codes, and C programming language based User-Defined Function (UDF) codes which can be compiled in the ANSYS-FLUENT environment. The computer codes help to understand and use efficiently a new concept which can also be implemented in any other software packages. The simulation results are compared to classical analytical solutions and experimental data taken from the literature. A particular attention is paid to how to obtain accurate results within a reasonable computational time for wide range of benchmark problems. The provided examples and programming techniques help graduate and postgraduate students, engineers and researchers to further develop their technical skills and knowledge.
Author : S. S. Girimaji
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (897 download)
Download or read book A Galilean Invariant Explicit Algebraic Reynolds Stress Model for Curved Flows written by S. S. Girimaji and published by . This book was released on 1996 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Virgil Adumitroaie
Publisher :
ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.:/5 (317 download)
Download or read book Progress in Favre-Reynolds Stress Closures for Compressible Flows written by Virgil Adumitroaie and published by . This book was released on 1998 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: A closure for the compressible portion of the pressure strain covariance is developed. It is shown that, within the context of a pressure strain closure assumption linear in the Reynolds stresses, an expression for the pressure dilatation can be used to construct a representation for the pressure strain. Additional closures for the unclosed terms in the Favre Reynolds stress equations involving the mean acceleration are also constructed. The closures accommodate compressibility corrections depending on the magnitude of the turbulent Mach number, the mean density gradient, the mean pressure gradient, the mean dilatation, and, of course, the mean velocity gradients. The effects of the compressibility corrections are consistent with current DNS results. Using the compressible pressure strain and mean acceleration closures in the Favre Reynolds stress equations an algebraic closure for the Favre Reynolds stresses is constructed. Noteworthy is the fact that, in the absence of mean velocity gradients, the mean density gradient produces Favre Reynolds stresses in accelerating mean flows. Computations of the mixing layer using the compressible closures developed are described. Favre Reynolds stress closure and two equation algebraic models are compared to laboratory data. The mixing layer configuration computations are compared to laboratory data; since the laboratory data for the turbulence stresses is inconsistent, this comparison is inconclusive. Comparisons for the spread rate reduction indicate a sizable decrease in the mixing layer growth rate.
Author : Matthew J. Warfield
Publisher :
ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (977 download)
Download or read book Computation of Turbulent Rotating Channel Flow with an Algebraic Reynolds Stress Model written by Matthew J. Warfield and published by . This book was released on 1986 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
