Download or read book A Robust and Efficient Finite Volume Method for Compressible Two Phase Flows at All Speeds on Unstructured Grids written by Aditya Kiran Pandare and published by . This book was released on 2018 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Finite Volume Method in Computational Fluid Dynamics written by F. Moukalled and published by Springer. This book was released on 2015-08-13 with total page 799 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook explores both the theoretical foundation of the Finite Volume Method (FVM) and its applications in Computational Fluid Dynamics (CFD). Readers will discover a thorough explanation of the FVM numerics and algorithms used for the simulation of incompressible and compressible fluid flows, along with a detailed examination of the components needed for the development of a collocated unstructured pressure-based CFD solver. Two particular CFD codes are explored. The first is uFVM, a three-dimensional unstructured pressure-based finite volume academic CFD code, implemented within Matlab. The second is OpenFOAM®, an open source framework used in the development of a range of CFD programs for the simulation of industrial scale flow problems. With over 220 figures, numerous examples and more than one hundred exercise on FVM numerics, programming, and applications, this textbook is suitable for use in an introductory course on the FVM, in an advanced course on numerics, and as a reference for CFD programmers and researchers.
Download or read book A Pressure velocity Coupled Finite Volume Algorithm for Solving Incompressible Two Phase Flows written by Amer Kamal Abdel Aziz and published by . This book was released on 2009 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a previous paper entitled "A Coupled Finite Volume Solver for the Solution of Incompressible Flows on Unstructured Grids", a pressure-based coupled algorithm, within the context of the finite volume method, was used to solve single phase fluid flow problems. The coupling of pressure and velocity increases the robust ness of method in comparison to segregated solvers. The number of iterations and computational time required to reach convergence decreases substantially. In on e of the cases, the coupled algorithm accelerated the solution by 104 times as c ompared to the segregated algorithm SIMPLE. The results show that the coupled so lver is grid independent, with the number of iterations remaining practically th e same for various grid densities. In this work, the coupled solver is extended to solve steady, incompressible, tw o-phase flow problems over quadrilateral grids. In this extension, new variables have to be found in addition to pressure and velocity, namely the volume fracti on fields. The new method is term coupled due to coupling of mass and velocity. The volume fraction equations, however, are solved in a different step once the updated pressure and velocity are found. The Mass Conservation Based Algorithm (MCBA), in which the pressure equation is derived from the global mass conservat ion equation, is used to solve the multiphase problems. The performance of the c oupled solver is compared to that of SIMPLE using several test problems. the cou pled algorithm is expected to require less iterations number as well as less com putational time and cost. The results show a 10 times reduction in the number of iterations required in some case, and 2 to 3 times less computational time.
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamentals of Numerical Reservoir Simulation written by D.W. Peaceman and published by Elsevier. This book was released on 2000-04-01 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of numerical reservoir simulation with high-speed electronic computers has gained wide acceptance throughout the petroleum industry for making engineering studies of a wide variety of oil and gas reservoirs throughout the world. These reservoir simulators have been designed for use by reservoir engineers who possess little or no background in the numerical mathematics upon which they are based. In spite of the efforts to improve numerical methods to make reservoir simulators as reliable, efficient, and automatic as possible, the user of a simulator is faced with a myriad of decisions that have nothing to do with the problem to be solved. This book combines a review of some basic reservoir mechanics with the derivation of the differential equations that reservoir simulators are designed to solve.
Download or read book Finite Volume Solutions of the Two dimensional Compressible Flow Equations on Structured Unstructured and Hybrid Grids written by Dantje Kardana Natakusumah and published by . This book was released on 1993 with total page 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 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Fully Coupled Finite Volume Method for Fluid Flow at All Speeds written by Ihab Abdullah Sraj and published by . This book was released on 2006 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis we present a new fully coupled algorithm for fluid flow at all sp eeds. This algorithm has been developed and implemented within a finite volume m ethod in which the momentum equations and the continuity equation are solved tog ether for the velocity and pressure fields. The coupling is retained by treating the pressure appearing in the momentum equations implicitly and by using Rhie-C how interpolation to obtain the pressure field in the continuity equation. This is opposed to what is done using the segregated approach where each equation is solved separately and linked together by constant updating of the different fiel ds. Such practice is known to decelerate the convergence rate especially for ref ined meshes even with the use of multi-grid methods. While the proposed coupled algorithm has proved to be more efficient as the convergence is faster and thus the computational CPU time is reduced. It is has also proved that it is more sca lable as the reduction in time increases with the increase in the size of the me sh for all speeds problems and grid structures. Several test cases have been don e and revealed a great acceleration in computational CPU time that reached 50 ti mes for the mesh of 100, 000 elements for both cartesian orthogonal and non-orth ogonal grids. This is true for the case of low speed flows while for the case of high-speed flows the acceleration is lower.
Download or read book Development and Application of a Finite Volume Method for the Computation of Flows Around Moving Bodies on Unstructured Overlapping Grids written by Hidajet Hadžić and published by . This book was released on 2006 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aeronautical Engineering A Cumulative Index to a Continuing Bibliography supplement 300 written by and published by . This book was released on 1994 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multiphase Microfluidics The Diffuse Interface Model written by Roberto Mauri and published by Springer Science & Business Media. This book was released on 2012-05-31 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diffuse interface (D.I.) model for muliphase flows.- Phase separation of viscous ternary liquid mixtures.- Dewetting and decomposing films of simple and complex liquids.- Phase-field models. Multiphase flows are typically described assuming that the different phases are separated by a sharp interface, with appropriate boundary conditions. This approach breaks down whenever the lengthscale of the phenomenon that is being studied is comparable with the real interface thickness, as it happens, for example, in the coalescence and breakup of bubbles and drops, the wetting and dewetting of solid surfaces and, in general, im micro-devices. The diffuse interface model resolves these problems by assuming that all quantities can vary continuously, so that interfaces have a non-zero thickness, i.e. they are "diffuse". The contributions in this book review the theory and describe some relevant applications of the diffuse interface model for one-component, two-phase fluids and for liquid binary mixtures, to model multiphase flows in confined geometries.
Download or read book Fluid Mechanics and Fluid Power Vol 3 written by Suvanjan Bhattacharyya and published by Springer Nature. This book was released on 2023-04-17 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the select proceedings of the 48th National Conference on Fluid Mechanics and Fluid Power (FMFP 2021) held at BITS Pilani in December 2021. It covers the topics such as fluid mechanics, measurement techniques in fluid flows, computational fluid dynamics, instability, transition and turbulence, fluid‐structure interaction, multiphase flows, micro- and nanoscale transport, bio-fluid mechanics, aerodynamics, turbomachinery, propulsion and power. The book will be useful for researchers and professionals interested in the broad field of mechanics.
Download or read book An Implicit Finite Volume Method for Compressible Turbulent Flows on Unstructured Meshes written by Philippe Geuzaine and published by . This book was released on 1999 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Simple and Efficient Diffuse Interface Method for Compressible Two Phase Flows written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In nuclear reactor safety and optimization there are key issues that rely on in-depth understanding of basic two-phase flow phenomena with heat and mass transfer. For many reasons, to be discussed, there is growing interest in the application of two-phase flow models to provide diffuse, but nevertheless resolved, simulation of interfaces between two immiscible compressible fluids - diffuse interface method (DIM). Because of its ability to dynamically create interfaces and to solve interfaces separating pure media and mixtures for DNS-like (Direct Numerical Simulation) simulations of interfacial flows, we examine the construction of a simple, robust, fast, and accurate numerical formulation for the 5-equation Kapila et al. [1] reduced two-phase model. Though apparently simple, the Kapila et al. model contains a volume fraction differential transport equation containing a nonlinear, non-conservative term which poses serious computational challenges. To circumvent the difficulties encountered with the single velocity and single pressure Kapila et al. [1] multiphase flow model, a 6-equation relaxation hyperbolic model is built to solve interface problems with compressible fluids. In this approach, pressure non-equilibrium is first restored, followed by a relaxation to an asymptotic solution which is convergent to the solutions of the Kapila et al. reduced model. The apparent complexity introduced with this extended hyperbolic model actually leads to considerable simplifications regarding numerical resolution, and the various ingredients used by this method are general enough to consider future extensions to problems involving complex physics.
Download or read book Numerical Methods for Compressible Flows written by American Society of Mechanical Engineers. Winter Annual Meeting and published by . This book was released on 1986 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 92 3430 92 3458 written by and published by . This book was released on 1992 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
