Application Of Computer Methods In Free Surface And Pressurized Flow Modeling
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Application Of Computer Methods In Free Surface And Pressurized Flow Modeling
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Author : Romuald Szymkiewicz
language : en
Publisher:
Release Date : 2011
Application Of Computer Methods In Free Surface And Pressurized Flow Modeling written by Romuald Szymkiewicz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Computer Modeling Of Free Surface And Pressurized Flows
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Author : M. Hanif Chaudhry
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Computer Modeling Of Free Surface And Pressurized Flows written by M. Hanif Chaudhry and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Computers are widely used for the analysis, design, and operation of water resource projects. This gives accurate results, allowing the analysis of complex systems which may not have been possible otherwise, and the investigation and comparison of several different alternatives in a short time, thereby reducing the project costs, optimizing design, and efficient utilization of resources. This volume compiles an edited version of the lecture notes specially prepared by 14 well-known European and North American researchers. Part I deals with free-surface flows. Governing equations are derived and their solution by the finite-difference, finite-element, and boundary-integral methods are discussed. Then, turbulence models, three-dimensional models, dam-break flow models, sediment transport models, and flood routing models are presented. Part II is related to the modeling of steady and transient pressurized flows. Governing equations for both single and two-component flows are derived and numerical methods for their solution are presented. The modeling of water quality in pipe networks, of cooling water systems, and slow and rapid transients is then discussed.
Free Surface Flow
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Author : Nikolaos D. Katopodes
language : en
Publisher: Butterworth-Heinemann
Release Date : 2018-10-31
Free Surface Flow written by Nikolaos D. Katopodes and has been published by Butterworth-Heinemann this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-31 with Technology & Engineering categories.
Free-Surface Flow: Computational Methods presents a detailed analysis of numerical schemes for shallow-water waves. It includes practical applications for the numerical simulation of flow and transport in rivers and estuaries, the dam-break problem and overland flow. Closure models for turbulence, such as Reynolds-Averaged Navier-Stokes and Large Eddy Simulation are presented, coupling the aforementioned surface tracking techniques with environmental fluid dynamics. While many computer programs can solve the partial differential equations describing the dynamics of fluids, many are not capable of including free surfaces in their simulations. Provides numerical solutions of the turbulent Navier-Stokes equations in three space dimensions Includes closure models for turbulence, such as Reynolds-Averaged Navier-Stokes, and Large Eddy Simulation Practical applications are presented for the numerical simulation of flow and transport in rivers and estuaries, the dam-break problem and overland flow
Experimentation Modeling And Computation In Flow Turbulence And Combustion
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Author : Jean-Antoine Désidéri
language : en
Publisher:
Release Date : 1996
Experimentation Modeling And Computation In Flow Turbulence And Combustion written by Jean-Antoine Désidéri and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Mathematics categories.
Volume 2 of this significant work presents previously unpublished cutting-edge lectures from the Third French-Russian Workshop on Fluid Dynamics held in Tashkent in April 1995. Reflecting the Workshop?s main themes, this book particularly focuses on: expermental investigation of unsteady separated flow, 3D configurations, laminar and transitional flows, turbulent shock, shock interaction in hypersonic flow, pressure pulsation in separated flows and jets and high enthalpy flows using wind tunnels. modeling of free surface flows, natural gas combustion, vortical gas flows and acoustic processes in complex channels, non-equilibrium hypersonic viscous flows, wall law for fluids and compressible fluid jets with vortex zones. theoretical predictions of aerodynamic performances with analyses of supersonic combustion, detonation, and sumulation of reactive mixing layer. solution methods for quasilinear parabolic equations and other calculations including incompressible Navier Stokes equations and parabolic equations by Monte-Carlo methods. numerical algorithms for the simulation of atmospheric gas dynamics, kinetic schemes for viscous gas dynamic flows and evolutionary algorithms for complex optimization problems. This book will be of particular interest to all engineers and research scientists in Fluid Dynamics, Aeronautics, Aerospace and Mechanical or Applied Mathematics.
Computational Methods For Fluid Dynamics
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Author : Joel H. Ferziger
language : en
Publisher: Springer
Release Date : 2019-08-16
Computational Methods For Fluid Dynamics written by Joel H. Ferziger and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-08-16 with Technology & Engineering categories.
This book is a guide to numerical methods for solving fluid dynamics problems. The most widely used discretization and solution methods, which are also found in most commercial CFD-programs, are described in detail. Some advanced topics, like moving grids, simulation of turbulence, computation of free-surface flows, multigrid methods and parallel computing, are also covered. Since CFD is a very broad field, we provide fundamental methods and ideas, with some illustrative examples, upon which more advanced techniques are built. Numerical accuracy and estimation of errors are important aspects and are discussed in many examples. Computer codes that include many of the methods described in the book can be obtained online. This 4th edition includes major revision of all chapters; some new methods are described and references to more recent publications with new approaches are included. Former Chapter 7 on solution of the Navier-Stokes equations has been split into two Chapters to allow for a more detailed description of several variants of the Fractional Step Method and a comparison with SIMPLE-like approaches. In Chapters 7 to 13, most examples have been replaced or recomputed, and hints regarding practical applications are made. Several new sections have been added, to cover, e.g., immersed-boundary methods, overset grids methods, fluid-structure interaction and conjugate heat transfer.
Computational Fluid Dynamics
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Author : Frederic Magoules
language : en
Publisher: CRC Press
Release Date : 2011-08-24
Computational Fluid Dynamics written by Frederic Magoules and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-08-24 with Mathematics categories.
Exploring new variations of classical methods as well as recent approaches appearing in the field, Computational Fluid Dynamics demonstrates the extensive use of numerical techniques and mathematical models in fluid mechanics. It presents various numerical methods, including finite volume, finite difference, finite element, spectral, smoothed particle hydrodynamics (SPH), mixed-element-volume, and free surface flow. Taking a unified point of view, the book first introduces the basis of finite volume, weighted residual, and spectral approaches. The contributors present the SPH method, a novel approach of computational fluid dynamics based on the mesh-free technique, and then improve the method using an arbitrary Lagrange Euler (ALE) formalism. They also explain how to improve the accuracy of the mesh-free integration procedure, with special emphasis on the finite volume particle method (FVPM). After describing numerical algorithms for compressible computational fluid dynamics, the text discusses the prediction of turbulent complex flows in environmental and engineering problems. The last chapter explores the modeling and numerical simulation of free surface flows, including future behaviors of glaciers. The diverse applications discussed in this book illustrate the importance of numerical methods in fluid mechanics. With research continually evolving in the field, there is no doubt that new techniques and tools will emerge to offer greater accuracy and speed in solving and analyzing even more fluid flow problems.
Simulation Of Free Surface Flows And Development Of An Improved Particle Method
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Author : Tibing Xu
language : en
Publisher:
Release Date : 2017
Simulation Of Free Surface Flows And Development Of An Improved Particle Method written by Tibing Xu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
Undergoing development for decades, the mesh-free methods, both Smoothed Particle Hydrodynamics (SPH) and the Moving Particle Semi-implicit method (MPS), have become useful numerical tools for studying free-surface flows in various engineering problems. They are able to easily simulate complicated fluid interface flows. As a Lagrangian method, MPS with a weakly-compressible technique, Weakly-Compressible Moving Particle Semi-implicit method (WC-MPS), has been widely applied into handling free-surface flows in hydraulic engineering. WC-MPS has been reported to perform well in reproducing the flow structures and velocity distributions in many free-surface flows. One aspect of this study is to apply WC-MPS to simulate fishway flows and dry granular flows, numerically investigating the flows structures and velocity distributions. However, this method suffers from pressure noise and unphysical pressure fluctuations in modeling flows. Therefore, the other aspect of this study is to improve the method in calculating pressure and stabilize the simulations. In the investigation of the flows in the pool-and-weir fishway, different design parameters are examined, including the discharge, the length of the fishway pool, and the height of the weir, are considered in the investigation. Two typical flow patterns, plunging flow and skimming flow, are successfully reproduced. The free-surface profiles and velocity distribution in the two flow patterns are compared with experimental measurements. To simulate dry granular flows, the (I) rheology model is coupled with WC-MPS to calculate the effective viscosity and shear stress. The coupled method is then employed to simulate granular column collapses caused by dry granular materials such as glass beads. During the collapses, the flowing region and static region are reproduced. Free-surface profiles and wave fronts are shown to have good agreement with experimental research in literature. The simulated velocity also compared well with the experimental data. It is found that the typical linear relation on velocity distribution exists in the flowing region. On the basis of velocity analysis, the distribution of shear stress is examined and discussed. Furthermore, an improved WC-MPS (IWC-MPS) is proposed to improve the accuracy and stabilize the pressure calculation. A new Laplacian model is derived to improve the accuracy in the method. A stabilization technique is also proposed to enhance the incompressibility and reduce pressure noise. The new Laplacian model is validated by a 2D diffusion problem and the Couette flow. It shows that the new Laplacian model is able to calculate more accurate results. The stabilization technique is validated by a water jet impinging on a rigid flat plate. The stabilization technique is able to greatly reduce the pressure noise and unphysical pressure fluctuations. In modeling a dam-breaking flow, IWC-MPS is able to achieve similar good results with other numerical methods such as AQUAgpusph and DualSPHysics. WC-MPS is useful numerical tool in handling free-surface flows such as fishway flows and dry granular flows. With the new version of it-IWC-MPS, more stabilized results can be achieved.
Frontiers In Computational Fluid Structure Interaction And Flow Simulation
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Author : Tayfun E. Tezduyar
language : en
Publisher: Springer
Release Date : 2018-10-26
Frontiers In Computational Fluid Structure Interaction And Flow Simulation written by Tayfun E. Tezduyar and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-26 with Mathematics categories.
Computational fluid-structure interaction and flow simulation are challenging research areas that bring solution and analysis to many classes of problems in science, engineering, and technology. Young investigators under the age of 40 are conducting much of the frontier research in these areas, some of which is highlighted in this book. The first author of each chapter took the lead role in carrying out the research presented. The topics covered include Computational aerodynamic and FSI analysis of wind turbines, Simulating free-surface FSI and fatigue-damage in wind-turbine structural systems, Aorta flow analysis and heart valve flow and structure analysis, Interaction of multiphase fluids and solid structures, Computational analysis of tire aerodynamics with actual geometry and road contact, and A general-purpose NURBS mesh generation method for complex geometries. This book will be a valuable resource for early-career researchers and students — not only those interested in computational fluid-structure interaction and flow simulation, but also other fields of engineering and science, including fluid mechanics, solid mechanics and computational mathematics – as it will provide them with inspiration and guidance for conducting their own successful research. It will also be of interest to senior researchers looking to learn more about successful research led by those under 40 and possibly offer collaboration to these researchers.
Computational Experimental Methods In Multiphase Complex Flow Ix
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Author : P. Vorobieff
language : en
Publisher: WIT Press
Release Date : 2017-10-11
Computational Experimental Methods In Multiphase Complex Flow Ix written by P. Vorobieff and has been published by WIT Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-11 with Science categories.
The 9th book from this successful conference series, on Computational & Experimental Methods in Multiphase & Complex Flow, presents the latest research in one of the most challenging, yet most universally applicable areas of technology. Multiphase flows are found in all areas of technology and the range of related problems of interest is vast, including astrophysics, biology, geophysics, atmospheric process, and many areas of engineering. Recently multiphase fluid dynamics have generated a great deal of attention, leading to many notable advances in experimental, analytical and numerical studies. It is perhaps, however, work on numerical solutions which is the most noticeable owing to the continuing improvements in computer software tools. Progress in numerical methods has permitted the solution of many practical problems, helping to improve our understanding of the physics involved. The presented papers illustrate the close interaction between numerical modellers and researchers working to gradually resolve the many outstanding issues in our understanding of multiphase flow. They cover such topics as: Multiphase flow simulation; Bubble and drop dynamics; Interface behaviour; Experimental measurements; Energy applications; Compressible flows; Flow in porous media; Turbulent flow; Image processing; Heat transfer; Atomization; Hydromagnetics; Plasma; Fluidised beds; Cavitation; Multiphase chemical reactions.
The Finite Element Method In Heat Transfer And Fluid Dynamics Second Edition
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Author : J. N. Reddy
language : en
Publisher: CRC Press
Release Date : 2000-12-20
The Finite Element Method In Heat Transfer And Fluid Dynamics Second Edition written by J. N. Reddy and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-12-20 with Science categories.
The numerical simulation of fluid mechanics and heat transfer problems is now a standard part of engineering practice. The widespread availability of capable computing hardware has led to an increased demand for computer simulations of products and processes during their engineering design and manufacturing phases. The range of fluid mechanics and heat transfer applications of finite element analysis has become quite remarkable, with complex, realistic simulations being carried out on a routine basis. The award-winning first edition of The Finite Element Method in Heat Transfer and Fluid Dynamics brought this powerful methodology to those interested in applying it to the significant class of problems dealing with heat conduction, incompressible viscous flows, and convection heat transfer. The Second Edition of this bestselling text continues to provide the academic community and industry with up-to-date, authoritative information on the use of the finite element method in the study of fluid mechanics and heat transfer. Extensively revised and thoroughly updated, new and expanded material includes discussions on difficult boundary conditions, contact and bulk nodes, change of phase, weighted-integral statements and weak forms, chemically reactive systems, stabilized methods, free surface problems, and much more. The Finite Element Method in Heat Transfer and Fluid Dynamics offers students a pragmatic treatment that views numerical computation as a means to an end and does not dwell on theory or proof. Mastering its contents brings a firm understanding of the basic methodology, competence in using existing simulation software, and the ability to develop some simpler, special purpose computer codes.