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Mixed Element Type Unstructured Grid Generation For Viscous Flow Applications
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Author :National Aeronautics and Space Adm Nasa Publisher :Independently Published ISBN 13 :9781724024220 Total Pages :28 pages Book Rating :4.0/5 (242 download)
Book Synopsis Mixed Element Type Unstructured Grid Generation for Viscous Flow Applications by : National Aeronautics and Space Adm Nasa
Download or read book Mixed Element Type Unstructured Grid Generation for Viscous Flow Applications written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-25 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A procedure is presented for efficient generation of high-quality unstructured grids suitable for CFD simulation of high Reynolds number viscous flow fields. Layers of anisotropic elements are generated by advancing along prescribed normals from solid boundaries. The points are generated such that either pentahedral or tetrahedral elements with an implied connectivity can be be directly recovered. As points are generated they are temporarily attached to a volume triangulation of the boundary points. This triangulation allows efficient local search algorithms to be used when checking merging layers, The existing advancing-front/local-reconnection procedure is used to generate isotropic elements outside of the anisotropic region. Results are presented for a variety of applications. The results demonstrate that high-quality anisotropic unstructured grids can be efficiently and consistently generated for complex configurations. Marcum, David L. and Gaither, J. Adam Langley Research Center MSSU-COE-ERC-00-06
Book Synopsis Adaptive Meshing Techniques for Viscous Flow Calculations on Mixed Element Unstructured Meshes by : Dimitri Mavriplis
Download or read book Adaptive Meshing Techniques for Viscous Flow Calculations on Mixed Element Unstructured Meshes written by Dimitri Mavriplis and published by . This book was released on 1997 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computational Fluid Dynamics by : Jiri Blazek
Download or read book Computational Fluid Dynamics written by Jiri Blazek and published by Butterworth-Heinemann. This book was released on 2015-04-23 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational Fluid Dynamics: Principles and Applications, Third Edition presents students, engineers, and scientists with all they need to gain a solid understanding of the numerical methods and principles underlying modern computation techniques in fluid dynamics. By providing complete coverage of the essential knowledge required in order to write codes or understand commercial codes, the book gives the reader an overview of fundamentals and solution strategies in the early chapters before moving on to cover the details of different solution techniques. This updated edition includes new worked programming examples, expanded coverage and recent literature regarding incompressible flows, the Discontinuous Galerkin Method, the Lattice Boltzmann Method, higher-order spatial schemes, implicit Runge-Kutta methods and parallelization. An accompanying companion website contains the sources of 1-D and 2-D Euler and Navier-Stokes flow solvers (structured and unstructured) and grid generators, along with tools for Von Neumann stability analysis of 1-D model equations and examples of various parallelization techniques. Will provide you with the knowledge required to develop and understand modern flow simulation codes Features new worked programming examples and expanded coverage of incompressible flows, implicit Runge-Kutta methods and code parallelization, among other topics Includes accompanying companion website that contains the sources of 1-D and 2-D flow solvers as well as grid generators and examples of parallelization techniques
Book Synopsis Computational Fluid Dynamics: Principles and Applications by : Jiri Blazek
Download or read book Computational Fluid Dynamics: Principles and Applications written by Jiri Blazek and published by Elsevier. This book was released on 2001-05-11 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational Fluid Dynamics: Principles and Applications
Book Synopsis New Challenges in Grid Generation and Adaptivity for Scientific Computing by : Simona Perotto
Download or read book New Challenges in Grid Generation and Adaptivity for Scientific Computing written by Simona Perotto and published by Springer. This book was released on 2015-04-27 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume collects selected contributions from the “Fourth Tetrahedron Workshop on Grid Generation for Numerical Computations”, which was held in Verbania, Italy in July 2013. The previous editions of this Workshop were hosted by the Weierstrass Institute in Berlin (2005), by INRIA Rocquencourt in Paris (2007), and by Swansea University (2010). This book covers different, though related, aspects of the field: the generation of quality grids for complex three-dimensional geometries; parallel mesh generation algorithms; mesh adaptation, including both theoretical and implementation aspects; grid generation and adaptation on surfaces – all with an interesting mix of numerical analysis, computer science and strongly application-oriented problems.
Book Synopsis Generation of Unstructured Grids for Viscous Flow Applications by : David L. Marcum
Download or read book Generation of Unstructured Grids for Viscous Flow Applications written by David L. Marcum and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Adaptive Meshing Techniques for Viscous Flow Calculations on Mixed Element Unstructured Meshes by : D. J. Mavriplis
Download or read book Adaptive Meshing Techniques for Viscous Flow Calculations on Mixed Element Unstructured Meshes written by D. J. Mavriplis and published by . This book was released on 1997 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Parallel Computational Fluid Dynamics by : Kenli Li
Download or read book Parallel Computational Fluid Dynamics written by Kenli Li and published by Springer. This book was released on 2014-03-08 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 25th International Conference on Parallel Computational Fluid Dynamics, ParCFD 2013, held in Changsha, China, in May 2013. The 35 revised full papers presented were carefully reviewed and selected from more than 240 submissions. The papers address issues such as parallel algorithms, developments in software tools and environments, unstructured adaptive mesh applications, industrial applications, atmospheric and oceanic global simulation, interdisciplinary applications and evaluation of computer architectures and software environments.
Book Synopsis High-order Methods on Mixed-element Unstructured Meshes for Aeronautical Applications by : Antonios Foivos Antoniadis
Download or read book High-order Methods on Mixed-element Unstructured Meshes for Aeronautical Applications written by Antonios Foivos Antoniadis and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Higher resolution and reliability are the desiderata for Computational Fluid Dynamics and main drivers for the development, implementation and validation of highorder accurate methods. Complex fluid dynamic phenomena such as shock-wave boundary-layer interactions, turbulent separated flows and fluid problems involving multiple scales are adequately resolved with high-order schemes. The spatial representation of the flow field by an unstructured mesh provides flexibility, automation, fast and effortless grid generation and exceptional load balance on multiple processor computers. This plethora of advantages is mirrored by the unprecedented popularity of unstructured-based schemes. The objective of this PhD project is the implementation of two high-order schemes for the compressible Navier-Stokes equations in the context of the finite volume "kexact" framework: the MUSCL-TVD and WENO. The schemes are formulated in two and three space dimensions for mixed-element unstructured meshes; in addition, the Spalart-Allmaras turbulence model is implemented into the developed numerical framework. A wide range of applications are considered spanning from low-speed flows (M = 0.08) to supersonic conditions (M = 5.0); inviscid and viscous simulations in a broad spectrum of Reynolds numbers ranging from Re = 500 up to Re = 37×106. The applications include: the Taylor-Green vortex, the ONERA-M6 wing, flat plate, the NACA-0012 and the MD 30P-30N aerofoils, and a shock-wave boundary-layer interaction. For the examined cases, WENO schemes demonstrate superior accuracy, numerical dissipation and non-oscillatory behaviour over the MUSCL-TVD. High-order schemes inherit low numerical dissipation properties while turbulence models induce dissipation, this disequilibrium has adverse effects on the stability, convergence and accuracy of the simulation; therefore, turbulence model re-calibration would be required in order to accommodate high-order discretisation methods.
Book Synopsis MARINE 2011, IV International Conference on Computational Methods in Marine Engineering by : Luís Eça
Download or read book MARINE 2011, IV International Conference on Computational Methods in Marine Engineering written by Luís Eça and published by Springer Science & Business Media. This book was released on 2013-03-19 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains selected papers from the Fourth International Conference on Computational Methods in Marine Engineering, held at Instituto Superior Técnico, Technical University of Lisbon, Portugal in September 2011. Nowadays, computational methods are an essential tool of engineering, which includes a major field of interest in marine applications, such as the maritime and offshore industries and engineering challenges related to the marine environment and renewable energies. The 2011 Conference included 8 invited plenary lectures and 86 presentations distributed through 10 thematic sessions that covered many of the most relevant topics of marine engineering today. This book contains 16 selected papers from the Conference that cover “CFD for Offshore Applications”, “Fluid-Structure Interaction”, “Isogeometric Methods for Marine Engineering”, “Marine/Offshore Renewable Energy”, “Maneuvering and Seakeeping”, “Propulsion and Cavitation” and “Ship Hydrodynamics”. The papers were selected with the help of the recognized experts that collaborated in the organization of the thematic sessions of the Conference, which guarantees the high quality of the papers included in this book.
Book Synopsis Handbook of Grid Generation by : Joe F. Thompson
Download or read book Handbook of Grid Generation written by Joe F. Thompson and published by CRC Press. This book was released on 1998-12-29 with total page 1136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Grid Generation addresses the use of grids (meshes) in the numerical solutions of partial differential equations by finite elements, finite volume, finite differences, and boundary elements. Four parts divide the chapters: structured grids, unstructured girds, surface definition, and adaption/quality. An introduction to each section provides a roadmap through the material. This handbook covers: Fundamental concepts and approaches Grid generation process Essential mathematical elements from tensor analysis and differential geometry, particularly relevant to curves and surfaces Cells of any shape - Cartesian, structured curvilinear coordinates, unstructured tetrahedra, unstructured hexahedra, or various combinations Separate grids overlaid on one another, communicating data through interpolation Moving boundaries and internal interfaces in the field Resolving gradients and controlling solution error Grid generation codes, both commercial and freeware, as well as representative and illustrative grid configurations Handbook of Grid Generation contains 37 chapters as well as contributions from more than 100 experts from around the world, comprehensively evaluating this expanding field and providing a fundamental orientation for practitioners.
Book Synopsis Proceedings of the 8th International Symposium on Heating, Ventilation and Air Conditioning by : Angui Li
Download or read book Proceedings of the 8th International Symposium on Heating, Ventilation and Air Conditioning written by Angui Li and published by Springer Science & Business Media. This book was released on 2013-09-24 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the 8th International Symposium on Heating, Ventilation and Air Conditioning is based on the 8th International Symposium of the same name (ISHVAC2013), which took place in Xi’an on October 19-21, 2013. The conference series was initiated at Tsinghua University in 1991 and has since become the premier international HVAC conference initiated in China, playing a significant part in the development of HVAC and indoor environmental research and industry around the world. This international conference provided an exclusive opportunity for policy-makers, designers, researchers, engineers and managers to share their experience. Considering the recent attention on building energy consumption and indoor environments, ISHVAC2013 provided a global platform for discussing recent research on and developments in different aspects of HVAC systems and components, with a focus on building energy consumption, energy efficiency and indoor environments. These categories span a broad range of topics, and the proceedings provide readers with a good general overview of recent advances in different aspects of HVAC systems and related research. As such, they offer a unique resource for further research and a valuable source of information for those interested in the subject. The proceedings are intended for researchers, engineers and graduate students in the fields of Heating, Ventilation and Air Conditioning (HVAC), indoor environments, energy systems, and building information and management. Angui Li works at Xi’an University of Architecture and Technology, Yingxin Zhu works at Tsinghua University and Yuguo Li works at The University of Hong Kong.
Book Synopsis A Unified Multigrid Solver for the Navier-Stokes Equations on Mixed Element Meshes by : Institute for Computer Applications in Science and Engineering
Download or read book A Unified Multigrid Solver for the Navier-Stokes Equations on Mixed Element Meshes written by Institute for Computer Applications in Science and Engineering and published by . This book was released on 1995 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Package for 3-D Unstructured Grid Generation, Finite-element Flow Solution and Flow Field Visualization by :
Download or read book A Package for 3-D Unstructured Grid Generation, Finite-element Flow Solution and Flow Field Visualization written by and published by . This book was released on 1990 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Unstructured Grid Assessment for Viscous Flow Simulations by :
Download or read book Unstructured Grid Assessment for Viscous Flow Simulations written by and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A systematic assessment of the strengths and weaknesses of three viscous flowfield simulation methods for unstructured grids has been performed. The methods evaluated represent the primary viscous unstructured griding approaches currently in use including anisotropic tetrahedral, zonal hybrid (hexahedral/tetrahedral), and grids containing a mixture of cell types. The strengths and weaknesses of each method have been identified and grid resolution guidelines have been developed through a systematic study of the flow fields about a flat plate and ONERA M6 wing. Run conditions were selected to provide comparisons of a wide variety of flow field features including transonic and separated flows. Solutions are compared with theoretical and experimental data, and computational requirements of the three methods are compared to provide a relative evaluation of each method's accuracy and efficiency. Each of the unstructured grid approaches was found to provide adequate solution accuracy provided sufficient grid resolution and quality is employed. The zonal hybrid approach was found to provide the best solution computation efficiency at the expense of a long grid generation cycle time. The tetrahedral approach provided the fastest grid generation cycle time and the mixed cell approach provides the most flexibility.
Book Synopsis AIAA Aerospace Sciences Meeting and Exhibit, 42nd by :
Download or read book AIAA Aerospace Sciences Meeting and Exhibit, 42nd written by and published by . This book was released on 2004 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1990 with total page 996 pages. Available in PDF, EPUB and Kindle. Book excerpt:
