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Author : Richard Jude Page
Publisher :
ISBN 13 :
Total Pages : 170 pages
Book Rating : 4.:/5 (228 download)
Download or read book An Experimental Study of Developing Turbulent Flow in a Square Duct written by Richard Jude Page and published by . This book was released on 1971 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bayode Owolabi
Publisher : Springer
ISBN 13 : 303019745X
Total Pages : 141 pages
Book Rating : 4.0/5 (31 download)
Download or read book Characterisation of Turbulent Duct Flows written by Bayode Owolabi and published by Springer. This book was released on 2019-05-31 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents several new findings in the field of turbulent duct flows, which are important for a range of industrial applications. It presents both high-quality experiments and cutting-edge numerical simulations, providing a level of insight and rigour rarely found in PhD theses. The scientific advancements concern the effect of the Earth’s rotation on large duct flows, the experimental confirmation of marginal turbulence in a pressure-driven square duct flow (previously only predicted in simulations), the identification of similar marginal turbulence in wall-driven flows using simulations (for the first time by any means) and, on a separate but related topic, a comprehensive experimental study on the phenomenon of drag reduction via polymer additives in turbulent duct flows. In turn, the work on drag reduction resulted in a correlation that provides a quantitative prediction of drag reduction based on a single, measurable material property of the polymer solution, regardless of the flow geometry or concentration. The first correlation of its kind, it represents an important advancement from both a scientific and practical perspective.
Author : Johnny Kwok-on Po
Publisher :
ISBN 13 :
Total Pages : 182 pages
Book Rating : 4.:/5 (228 download)
Download or read book Developing Turbulent Flow in the Entrance Region of a Square Duct written by Johnny Kwok-on Po and published by . This book was released on 1975 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. C. Buggeln
Publisher :
ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.3/5 (121 download)
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).
Author : Shengming Chang
Publisher :
ISBN 13 :
Total Pages : 332 pages
Book Rating : 4.:/5 (29 download)
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:
Author : R. W. Johnson
Publisher :
ISBN 13 :
Total Pages : 537 pages
Book Rating : 4.:/5 (227 download)
Download or read book Turbulent Convecting Flow in a Square Duct with a 180deg Bend written by R. W. Johnson and published by . This book was released on 1984 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research in this British dissertation was motivated by the desire to provide a comprehensive set of convective heat transfer data against which flow simulation schemes could be tested. Turbulent convecting three-dimensional flow of fluids in curved passages is frequently encountered in thermofluids equipment and systems. Although such flow situations have been too complex to adequately simulate computationally in the past, recent developments have provided physical models coupled with numerical techniques which can be applied to provide such simulations. Nevertheless, it has not been established to what extent such simulations provide accurate predictions and a sufficiently detailed data base does not exist to allow a searching evaluation of computer predictions. It is the conclusion of this collaborative study that significant inadequacies remain in the turbulence and wall models with respect to their ability to predict fully-three dimensional curved turbulent flow. Predictions for the Nusselt number distribution are in rather better agreement with the experimental data than are the hydrodynamic and temperature field predictions.
Author : Michel Philippe Arnal
Publisher :
ISBN 13 :
Total Pages : 696 pages
Book Rating : 4.:/5 (7 download)
Download or read book Investigation of Developing Laminar and Turbulent Flow in Curved Ducts written by Michel Philippe Arnal and published by . This book was released on 1988 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David O. Davis
Publisher :
ISBN 13 :
Total Pages : 482 pages
Book Rating : 4.:/5 (244 download)
Download or read book Experimental Investigation of Turbulent Flow Through a Circular-to-rectangular Transition Duct written by David O. Davis and published by . This book was released on 1991 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter R. Voke
Publisher : Springer Science & Business Media
ISBN 13 : 9780792331063
Total Pages : 454 pages
Book Rating : 4.3/5 (31 download)
Download or read book Direct and Large-Eddy Simulation I written by Peter R. Voke and published by Springer Science & Business Media. This book was released on 1994-10-31 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is a truism that turbulence is an unsolved problem, whether in scientific, engin eering or geophysical terms. It is strange that this remains largely the case even though we now know how to solve directly, with the help of sufficiently large and powerful computers, accurate approximations to the equations that govern tur bulent flows. The problem lies not with our numerical approximations but with the size of the computational task and the complexity of the solutions we gen erate, which match the complexity of real turbulence precisely in so far as the computations mimic the real flows. The fact that we can now solve some turbu lence in this limited sense is nevertheless an enormous step towards the goal of full understanding. Direct and large-eddy simulations are these numerical solutions of turbulence. They reproduce with remarkable fidelity the statistical, structural and dynamical properties of physical turbulent and transitional flows, though since the simula tions are necessarily time-dependent and three-dimensional they demand the most advanced computer resources at our disposal. The numerical techniques vary from accurate spectral methods and high-order finite differences to simple finite-volume algorithms derived on the principle of embedding fundamental conservation prop erties in the numerical operations. Genuine direct simulations resolve all the fluid motions fully, and require the highest practical accuracy in their numerical and temporal discretisation. Such simulations have the virtue of great fidelity when carried out carefully, and repre sent a most powerful tool for investigating the processes of transition to turbulence.
Author : James Henry Azzola
Publisher :
ISBN 13 :
Total Pages : 128 pages
Book Rating : 4.:/5 (29 download)
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:
Author : F. Durst
Publisher : Springer Science & Business Media
ISBN 13 : 3642463959
Total Pages : 415 pages
Book Rating : 4.6/5 (424 download)
Download or read book Turbulent Shear Flows I written by F. Durst and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present book contains papers that have been selected from contributions to the First International Symposium on Turbulent Shear Flows which was held from the 18th to 20th April 1977 at The Pennsylvania State University, University Park, Pennsylvania, USA. Attend ees from close to 20 countries presented over 100 contributions at this meeting in which many aspects of the current activities in turbulence research were covered. Five topics received particular attention at the Symposium: Free Flows Wall Flows Recirculating Flows Developments in Reynolds Stress Closures New Directions in Modeling This is also reflected in the five chapters of this book with contributions from research workers from different countries. Each chapter covers the most valuable contributions of the conference to the particular chapter topic. Of course, there were many additional good con tributions to each subject at the meeting but the limitation imposed on the length of this volume required that a selection be made. The realization of the First International Symposium on Turbulent Shear Flows was p- sible by the general support of: U. S. Army Research Office U. S. Navy Research Office Continuing Education Center of The Pennsylvania State University The conference organization was carried out by the organizing committee consisting of: F. Durst, Universitat Karlsruhe, Karlsruhe, Fed. Rep. of Germany V. W. Goldschmidt, Purdue University, West Lafayette, Ind. , USA B. E. Launder, University of California, Davis, Calif. , USA F. W. Schmidt, Pennsylvania State University, University Park, Penna.
Author : Institute for Computer Applications in Science and Engineering
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (317 download)
Download or read book Numerical Study of Turbulent Secondary Flows in Curved Ducts written by Institute for Computer Applications in Science and Engineering and published by . This book was released on 1989 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David O. Davis
Publisher :
ISBN 13 :
Total Pages : 404 pages
Book Rating : 4.:/5 (128 download)
Download or read book Experimental and Numerical Investigation of Steady, Supersonic, Turbulent Flow Through a Square Duct written by David O. Davis and published by . This book was released on 1985 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nenad Sarunac
Publisher :
ISBN 13 :
Total Pages : 676 pages
Book Rating : 4.:/5 (139 download)
Download or read book Developing Turbulent Flow and Heat Transfer in a Rotating Rectangular Duct written by Nenad Sarunac and published by . This book was released on 1985 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sumnesh Mathur
Publisher :
ISBN 13 :
Total Pages : 430 pages
Book Rating : 4.:/5 (76 download)
Download or read book Experimental Investigation of Turbulent Flow Through Rectangular Ducts with Non-parallel Walls written by Sumnesh Mathur and published by . This book was released on 1973 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Clifford John Cremers
Publisher :
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.:/5 (319 download)
Download or read book An Experimental Investigation of the Characteristics of Turbulence in a Triangular Duct written by Clifford John Cremers and published by . This book was released on 1961 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 43 pages
Book Rating : 4.:/5 (227 download)
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).
