Download or read book Massively Parallel Simulations of Multiphase and Multicomponent Flows Using Lattice Boltzmann Methods written by Benjamin Ahrenholz and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Massively Parellel Simulations of Multiphase and Multicomponent Flows Using Lattice Boltzmann Methods written by Benjamin Ahrenholz and published by . This book was released on 2009 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lattice Boltzmann Modeling of Complex Flows for Engineering Applications written by Andrea Montessori and published by Morgan & Claypool Publishers. This book was released on 2018-02-20 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nature continuously presents a huge number of complex and multi-scale phenomena, which in many cases, involve the presence of one or more fluids flowing, merging and evolving around us. Since its appearance on the surface of Earth, Mankind has tried to exploit and tame fluids for their purposes, probably starting with Hero's machinery to open the doors of the Temple of Serapis in Alexandria to arrive to modern propulsion systems and actuators. Today we know that fluid mechanics lies at the basis of countless scientific and technical applications from the smallest physical scales (nanofluidics, bacterial motility, and diffusive flows in porous media), to the largest (from energy production in power plants to oceanography and meteorology). It is essential to deepen the understanding of fluid behaviour across scales for the progress of Mankind and for a more sustainable and efficient future. Since the very first years of the Third Millennium, the Lattice Boltzmann Method (LBM) has seen an exponential growth of applications, especially in the fields connected with the simulation of complex and soft matter flows. LBM, in fact, has shown a remarkable versatility in different fields of applications from nanoactive materials, free surface flows, and multiphase and reactive flows to the simulation of the processes inside engines and fluid machinery. LBM is based on an optimized formulation of Boltzmann's Kinetic Equation, which allows for the simulation of fluid particles, or rather quasi-particles, from a mesoscopic point of view thus allowing the inclusion of more fundamental physical interactions in respect to the standard schemes adopted with Navier-Stokes solvers, based on the continuum assumption. In this book, the authors present the most recent advances of the application of the LBM to complex flow phenomena of scientific and technical interest with particular focus on the multi-scale modeling of heterogeneous catalysis within nano-porous media and multiphase, multicomponent flows.

Download or read book Massively Parallel Direct Simulation of Multiphase Flow written by and published by . This book was released on 2000 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors understanding of multiphase physics and the associated predictive capability for multi-phase systems are severely limited by current continuum modeling methods and experimental approaches. This research will deliver an unprecedented modeling capability to directly simulate three-dimensional multi-phase systems at the particle-scale. The model solves the fully coupled equations of motion governing the fluid phase and the individual particles comprising the solid phase using a newly discovered, highly efficient coupled numerical method based on the discrete-element method and the Lattice-Boltzmann method. A massively parallel implementation will enable the solution of large, physically realistic systems.

Download or read book Multi scale Simulation of Multiphase Multi component Flow in Porous Media Using the Lattice Boltzmann Method written by Jianhui Yang and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heat Transfer written by Aziz Belmiloudi and published by BoD – Books on Demand. This book was released on 2011-02-14 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past few decades there has been a prolific increase in research and development in area of heat transfer, heat exchangers and their associated technologies. This book is a collection of current research in the above mentioned areas and describes modelling, numerical methods, simulation and information technology with modern ideas and methods to analyse and enhance heat transfer for single and multiphase systems. The topics considered include various basic concepts of heat transfer, the fundamental modes of heat transfer (namely conduction, convection and radiation), thermophysical properties, computational methodologies, control, stabilization and optimization problems, condensation, boiling and freezing, with many real-world problems and important modern applications. The book is divided in four sections : "Inverse, Stabilization and Optimization Problems", "Numerical Methods and Calculations", "Heat Transfer in Mini/Micro Systems", "Energy Transfer and Solid Materials", and each section discusses various issues, methods and applications in accordance with the subjects. The combination of fundamental approach with many important practical applications of current interest will make this book of interest to researchers, scientists, engineers and graduate students in many disciplines, who make use of mathematical modelling, inverse problems, implementation of recently developed numerical methods in this multidisciplinary field as well as to experimental and theoretical researchers in the field of heat and mass transfer.

Download or read book Numerical Methods for the Simulation of Multi phase and Complex Flow written by T. M. M. Verheggen and published by Lecture Notes in Control and I. This book was released on 1992 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: The nine review articles contained here introduce the techniques required touse lattice gas methods for numerical simulations of complex flows. Furthermore, lattice Boltzmann models are studied together with classical numerical techniques. The editors have written an extensive introductionto this exciting new approach to solving practical problems in modelling andsimulating flows. The book addresses numerical analysts and engineers in fluid mechanics, but also graduate students.

Download or read book The Lattice Boltzmann Method written by Timm Krüger and published by Springer. This book was released on 2016-11-07 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an introduction to the theory, practice, and implementation of the Lattice Boltzmann (LB) method, a powerful computational fluid dynamics method that is steadily gaining attention due to its simplicity, scalability, extensibility, and simple handling of complex geometries. The book contains chapters on the method's background, fundamental theory, advanced extensions, and implementation. To aid beginners, the most essential paragraphs in each chapter are highlighted, and the introductory chapters on various LB topics are front-loaded with special "in a nutshell" sections that condense the chapter's most important practical results. Together, these sections can be used to quickly get up and running with the method. Exercises are integrated throughout the text, and frequently asked questions about the method are dealt with in a special section at the beginning. In the book itself and through its web page, readers can find example codes showing how the LB method can be implemented efficiently on a variety of hardware platforms, including multi-core processors, clusters, and graphics processing units. Students and scientists learning and using the LB method will appreciate the wealth of clearly presented and structured information in this volume.

Download or read book Pore scale Simulation of Multiphase Flow Using Lattice Boltzmann Method written by Jingwei Huang and published by . This book was released on 2016 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High Performance Lattice Boltzmann Solvers on Massively Parallel Architectures with Applications to Building Aeraulics written by Christian Obrecht and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the advent of low-energy buildings, the need for accurate building performance simulations has significantly increased. However, for the time being, the thermo-aeraulic effects are often taken into account through simplified or even empirical models, which fail to provide the expected accuracy. Resorting to computational fluid dynamics seems therefore unavoidable, but the required computational effort is in general prohibitive. The joint use of innovative approaches such as the lattice Boltzmann method (LBM) and massively parallel computing devices such as graphics processing units (GPUs) could help to overcome these limits. The present research work is devoted to explore the potential of such a strategy. The lattice Boltzmann method, which is based on a discretised version of the Boltzmann equation, is an explicit approach offering numerous attractive features: accuracy, stability, ability to handle complex geometries, etc. It is therefore an interesting alternative to the direct solving of the Navier-Stokes equations using classic numerical analysis. From an algorithmic standpoint, the LBM is well-suited for parallel implementations. The use of graphics processors to perform general purpose computations is increasingly widespread in high performance computing. These massively parallel circuits provide up to now unrivalled performance at a rather moderate cost. Yet, due to numerous hardware induced constraints, GPU programming is quite complex and the possible benefits in performance depend strongly on the algorithmic nature of the targeted application. For LBM, GPU implementations currently provide performance two orders of magnitude higher than a weakly optimised sequential CPU implementation. The present thesis consists of a collection of nine articles published in international journals and proceedings of international conferences (the last one being under review). These contributions address the issues related to single-GPU implementations of the LBM and the optimisation of memory accesses, as well as multi-GPU implementations and the modelling of inter-GPU and internode communication. In addition, we outline several extensions to the LBM, which appear essential to perform actual building thermo-aeraulic simulations. The test cases we used to validate our codes account for the strong potential of GPU LBM solvers in practice.

Download or read book Numerical Simulation of Multiphase Flows in Microchannels Using the Lattice Boltzmann Method written by Luz Amaya-Bower and published by . This book was released on 2010 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lattice Boltzmann Method for Fluid Flow written by Amine Abdellah-El-Hadj and published by . This book was released on 2014 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last few years, a rapid development in the method known as the Lattice Boltzmann Method (LBM) has been achieved. It demonstrated its ability to simulate hydrodynamic systems, multiphase and multicomponent fluids. The main advantages of the LBM are the parallelism of the method, the simplicity of programming and the capability of incorporating model interactions. The use of the LBM to understand the flow structure inside the Gas Diffusion Layer (GDL) of a fuel cell is a particular active topic, motivated by the need of finding alternative energy conversion devices. In the present work we developed a rigorous initial base of a flow solver based on the LBM, the BGK model is used to approximate the collision term in the Boltzmann equation. We used the bounce back scheme to simulate the boundary conditions and the flow solver is validated against three benchmarking cases. The process of applying the boundary conditions was automated to handle complicated flow structures. We simulated the flow in a 2D structure surface extracted from a 3D reconstructed GDL, using both non-parallel and parallel code. The results for a single phase flow show the flow structure expected, the convergence of the parallel code is faster and its parallelism is easier comparing to the traditional Navier-Stokes solver.

Download or read book A Lattice Boltzmann Method for Immiscible Multiphase Flow Simulations Using the Level Set Method written by and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lattice Boltzmann Modeling written by Michael C. Sukop and published by Springer Science & Business Media. This book was released on 2007-04-05 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here is a basic introduction to Lattice Boltzmann models that emphasizes intuition and simplistic conceptualization of processes, while avoiding the complex mathematics that underlies LB models. The model is viewed from a particle perspective where collisions, streaming, and particle-particle/particle-surface interactions constitute the entire conceptual framework. Beginners and those whose interest is in model application over detailed mathematics will find this a powerful 'quick start' guide. Example simulations, exercises, and computer codes are included.

Download or read book Multiphase reacting flows modelling and simulation written by Daniele L. Marchisio and published by Springer Science & Business Media. This book was released on 2007-10-16 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the most widely applicable modeling approaches. Chapters are organized in six groups covering from fundamentals to relevant applications. The book covers particle-based methods and also discusses Eulerian-Eulerian and Eulerian-Lagrangian techniques based on finite-volume schemes. Moreover, the possibility of modeling the poly-dispersity of the secondary phases in Eulerian-Eulerian schemes by solving the population balance equation is discussed.

Download or read book Computational Fluid Dynamics written by Eduardo Ramos and published by World Scientific. This book was released on 2001 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pt. I. Astrophysics. Very high resolution simulations of compressible, turbulent flows / Paul R. Woodward [und weitere] -- Instabilities and filamentation of dispersive alfven waves / D. Laveder, T. Passot and P.L. Sulem -- Astrophysical jets / A.C. Raga [und weitere] -- A nonhydrostatic meteorological model (Meso-NH) applied to high angular resolution in astronomy: 3D characterization and forecasting of the optical turbulence / Elena Masciadri -- Numerical simulations of interplanetary shock waves using ZEUS-3D / A. Santillan, J.A. Gonzalez-Esparza and M.A. Yanez -- Photoionizing shocks in the interstellar medium / S.J. Arthur -- Numerical simulation of the interaction between jets and supernova remnants / Pablo Fabian Velazquez and Alejandro Raga -- Thermal instability in a turbulent medium / A. Gazol, E. Vazquez-Semadeni and J. Scalo -- Turbulent dissipation in the interstellar medium in the presence of discrete energy sources / Vladimir Avila-Reese and Enrique Vazquez-Semadeni -- The density probability distribution function in turbulent, isothermal, magnetized flows in a slab geometry / Enrique Vazquez-Semadeni and Thierry Passot -- Multifractal structure in simulations and observations of the interstellar medium / Wilder Chicana Nuncebay and Enrique Vazquez-Semadeni -- pt. II. Geophysics. Stratiform low clouds: Phenomenology and large eddy simulations / Douglas K. Lilly -- On the modeling of deep convective clouds over Mexico City / G.B. Raga and J. Morfin -- Spectral structure of growing normal modes for exact solutions to the barotropic vorticity equation on a sphere / Yuri N. Skiba and Andrei Y. Strelkov -- pt. III. Numerical and computational aspects. Distributed parallel simulation of surface tension driven viscous flow and transport processes / G.F. Carey [und weitere] -- Considerations for scalable CFD on the SGI ccNUMA architecture / M.D. Kremenetsky, S.A. Posey and T.L. Tysinger -- Parallelization of a two-way interactive grid nesting atmospheric model / Patrick Jabouille -- Natural convection in a cubical porous cavity: Solution by orthogonal collocation / Hugo Jimenez-Islas -- Numerical solutions of nonlinear DIA equations and calculation of turbulent diffusivities / N.A. Silant'ev -- pt. IV. Applications. From stars to volcanoes: The SPH story / J.J. Monaghan -- A parallel lattice-Boltzmann method for large scale simulations of complex fluids / Maziar Nekovee [und weitere] -- Natural convection in a slender container / Luis M. de la Cruz and Eduardo Ramos -- Effect on fluid flow and heat transfer of dephasing between plates in wavy plate passages / R. Romero-Mendez [und weitere] -- Analysis of the numerical simulation of the filling system used in production of aluminum pistons / A.R. Cabrera-Ruiz [und weitere] -- Isotherms in a solid with a tilted fracture and their effects on the local fluid motion / A. Medina [und weitere] -- Basic numerical simulations in Kaluza's magnetohydrodynamics / Alfredo Sandoval-Villalbazo [und weitere] -- Understanding dilute gases: Going beyond the Navier-Stokes equations / F.J. Uribe

Download or read book Computational Fluid Dynamics written by Jiyuan Tu and published by Elsevier. This book was released on 2007-12-04 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational Fluid Dynamics enables engineers to model and predict fluid flow in powerful, visually impressive ways and is one of the core engineering design tools, essential to the study and future work of many engineers. This textbook is designed to explcitly meet the needs engineering students taking a first course in CFD or computer-aided engineering. Fully course matched, with the most extensive and rigorous pedagogy and features of any book in the field, it is certain to be a key text. - The only course text available specifically designed to give an applications-lead, commercial software oriented approach to understanding and using Computational Fluid Dynamics (CFD). - Meets the needs of all engineering disciplines that use CFD. - The perfect CFD teaching resource: clear, straightforward text, step-by-step explanation of mathematical foundations, detailed worked examples, end-of-chapter knowledge check exercises, and homework assignment questions