Download or read book Calculation of Turbulence Driven Secondary Motion in Ducts with Arbitrary Cross Section written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-16 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Calculation methods for turbulent duct flows are generalized for ducts with arbitrary cross-sections. The irregular physical geometry is transformed into a regular one in computational space, and the flow equations are solved with a finite-volume numerical procedure. The turbulent stresses are calculated with an algebraic stress model derived by simplifying model transport equations for the individual Reynolds stresses. Two variants of such a model are considered. These procedures enable the prediction of both the turbulence-driven secondary flow and the anisotropy of the Reynolds stresses, in contrast to some of the earlier calculation methods. Model predictions are compared to experimental data for developed flow in triangular duct, trapezoidal duct and a rod-bundle geometry. The correct trends are predicted, and the quantitative agreement is mostly fair. The simpler variant of the algebraic stress model procured better agreement with the measured data. Demuren, A. O. Glenn Research Center NASA-TM-102142, ICOMP-89-16, E-4941, NAS 1.15:102142 NASA ORDER C-99066-G; RTOP 506-62-21...

Download or read book Calculation of Turbulence driven Secondary Motion in Ducts with Arbitrary Cross Section written by A. O. Demuren and published by . This book was released on 1989 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Calculation of Turbulence driven Secondary Models in Ducts with Arbitrary Cross Section written by A. O. Demuren and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CALCULATION OF TURBULENCE DRIVEN SECONDARY MOTION IN NON CIRCULAR DUCTS written by A. O. DEMUREN and published by . This book was released on 1982 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Calculation of Fully Developed Turbulent Flows in Ducts of Arbitrary Cross Section written by A. Nakayama and published by . This book was released on 1983 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book An Investigation of the Turbulence in the Entrance Section of a Rectangular Duct and a Comparison with Existing Secondary Flow written by Timothy Joseph Keliher and published by . This book was released on 1963 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Flow in Curved Ducts of Varying Cross section written by Fotis Sotiropoulos and published by . This book was released on 1992 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Developments in the Flow of Complex Fluids in Tubes written by Dennis A. Siginer and published by Springer. This book was released on 2014-11-11 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is dedicated to the tube flow of viscoelastic fluids and Newtonian single and multi-phase particle-laden fluids. This succinct volume collects the most recent analytical developments and experimental findings, in particular in predicting the secondary field, highlighting the historical developments which led to the progress made. This book brings a fresh and unique perspective and covers and interprets efforts to model laminar flow of viscoelastic fluids in tubes and laminar and turbulent flow of single and multi-phase particle-laden flow of linear fluids in the light of the latest findings.

Download or read book Computational Fluid Dynamics written by T. J. Chung and published by Cambridge University Press. This book was released on 2010-09-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of Computational Fluid Dynamics represents a significant improvement from the first edition. However, the original idea of including all computational fluid dynamics methods (FDM, FEM, FVM); all mesh generation schemes; and physical applications to turbulence, combustion, acoustics, radiative heat transfer, multiphase flow, electromagnetic flow, and general relativity is still maintained. The second edition includes a new section on preconditioning for EBE-GMRES and a complete revision of the section on flowfield-dependent variation methods, which demonstrates more detailed computational processes and includes additional example problems. For those instructors desiring a textbook that contains homework assignments, a variety of problems for FDM, FEM and FVM are included in an appendix. To facilitate students and practitioners intending to develop a large-scale computer code, an example of FORTRAN code capable of solving compressible, incompressible, viscous, inviscid, 1D, 2D and 3D for all speed regimes using the flowfield-dependent variation method is made available.

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Download or read book Advances in Numerical Simulation of Turbulent Flows written by Ismail Celik and published by . This book was released on 1991 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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