Download or read book Measurement and Calculation of Developing Turbulent Flow in a U bend and Downstream Tangent of Square Cross section written by Shengming Chang and published by . This book was released on 1983 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement and Calculation of Developing Turbulent Flow in a U Bend and Downstream Tangent of Square Cross Section written by and published by . This book was released on 1981 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review is provided of the second year of research pertaining to the experimental measurement and numerical prediction of curved duct flows. Experimental measurements obtained using a laser-Doppler velocimeter, recent turbulence model developments and numerical calculations are presented and discussed. The current state of the research program is revised together with a work plan for year three of research. (Author).

Download or read book Measurement and Calculation of Developing Turbulent Flow in a U bend and Downsteam Tangent of Square Cross section written by Shengming Chang and published by . This book was released on 1983 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1982 with total page 1282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Developing Turbulent Flow in a 180 Degree Bend and Downstream Tangent of Square Cross Sections written by J. A. C. Humphrey and published by . This book was released on 1982 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed account is given of the experimental and numerical modeling activities for the research period, relating to turbulent flow in a 180 deg curved duct. The measurements show variations in the flow field which, while understood, are not predictable by a K-epsilon model of turbulence. Numerical diffusion and exaggerated physical diffusion in the turbulence model are believed to be the major causes for the discrepancies observed. The new experimental data offered here should be of value for extending the theoretical base for the improved understanding and modeling of 3-D turbulent flows. Recommendations are made for continuing work.

Download or read book Developing Turbulent Flow in a 180 curved Pipe and Its Downstream Tangent written by James Henry Azzola and published by . This book was released on 1984 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1984 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American Doctoral Dissertations written by and published by . This book was released on 1983 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Developing Turbulent Flow in Strongly Curved Passages of Square and Circular Cross Section written by Joseph A. Humphrey and published by . This book was released on 1984 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: A summary is provided of the achievements and recommendations related to this research program. Reference is made to the extensive documentation already published. The appendix to this report contains recent experimental results obtained in a 180 deg curved pipe of circular cross-section. The results differ significantly from corresponding measurements in curved ducts.

Download or read book Computation of Laminar and Turbulent Flow in Curved Ducts Channels and Pipes Using the Navier Stokes Equations written by R. C. Buggeln and published by . This book was released on 1980 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Both laminar and turbulent flows in strongly curved ducts, channels, and pipes are studied by numerical methods. The study concentrates on the curved square-duct geometry and flow conditions for which detailed measurements have been obtained recently by Taylor, Whitelaw, and Yianneskis. The solution methodology encompasses solution of the compressible ensemble-averaged Navier-Stokes equations at low Mach number using a split linearized block implicit (LBI) scheme, and rapid convergence on the order of 80 noniterative time steps is obtained. The treatment of turbulent flows includes resolution of the viscous sublayer region. A series of solutions for both laminar and turbulent flow and for both two- and three-dimensional geometries of the same curvature are presented. The accuracy of these solutions is explored by mesh refinement and by comparison with experiment. In summary, good qualitative and reasonable quantitative agreement between solution and experiment is obtained. Collectively, this sequence of results serves to clarify the physical structure of these flows and hence how grid selection procedures might be adjusted to improve the numerical accuracy and experimental agreement. For a three-dimensional flow of considerable complexity, the relatively good agreement with experiment obtained for the turbulent flow case despite a coarse grid must be regarded as encouraging. (Author).

Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1989 with total page 1016 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 1164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Velocity Measurements in a High speed Flow Through a Square Duct Containing a 90 Bend written by Preyank Sheth and published by . This book was released on 2009 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study is aimed at better understanding the nature of bend effects in a high Reynolds number duct flow. Bend effects have been previously studied using laser Doppler velocimetry and hot wire anemometry, but these are point measurement techniques, which limits the amount and type of data that can be obtained. The current work employs particle image velocimetry to present detailed field measurements of the flow velocity throughout the bend, including upstream and downstream sections. Additionally, velocity measurements have been carried out at three different Reynolds numbers to establish the dependence or independence of the bend effects on the flowrate. Associated turbulence quantities have also been calculated and presented in an intuitive, graphical manner. The test section is a square cross-sectioned duct, containing a 90 degree bend preceded by an 5Dh[subscript] upstream section and a 10Dh[subscript] downstream straight section, where Dh[subscript] is the hydraulic diameter. Turbulent flow entering the upstream section is fully-developed to allow the isolation of the bend effects. At Re ~ 2.76X105, detailed velocity measurements are acquired at 12 streamwise locations in three streamwise-radial planes at different heights (top, middle and bottom). Complementary data are obtained in a more limited set of locations at Re~1.76X105 and Re~3.20X105 to allow comparison of the bend effects at different flowrates. Turbulence intensities and the Reynolds shear stress components are calculated and presented for all three Reynolds numbers. One of the major aims of this work is to provide a benchmark for computational codes developed to study bend effects in a turbulent pipe flow. To allow easy comparison of these codes to the results of the current study, all the measured and calculated quantities are plotted in a curvilinear coordinate system in addition to the native cartesian (global) coordinate system.

Download or read book Physics Briefs written by and published by . This book was released on 1984 with total page 1120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Engineering Calculation Methods for Turbulent Flow written by Peter Bradshaw and published by . This book was released on 1981 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Prediction of Turbulent Flow Around a Square Cross section Cylinder in the Proximity of a Solid Wall written by David Lacasse and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement and Computation of Streamflow written by Saul Edward Rantz and published by . This book was released on 1982 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: