Grid Generation and Adaptive Algorithms

Grid Generation and Adaptive Algorithms PDF

Author: Marshall W. Bern

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 191

ISBN-13: 1461215560

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This IMA Volume in Mathematics and its Applications GRID GENERATION AND ADAPTIVE ALGORITHMS is based on the proceedings of a workshop with the same title. The work shop was an integral part of the 1996-97 IMA program on "MATHEMAT ICS IN HIGH-PERFORMANCE COMPUTING. " I would like to thank Marshall Bern (Xerox, Palo Alto Research Cen ter), Joseph E. Flaherty (Department of Computer Science, Rensselaer Polytechnic Institute), and Mitchell Luskin (School of Mathematics, Uni versity of Minnesota), for their excellent work as organizers of the meeting and for editing the proceedings. I also take this opportunity to thank the National Science Founda tion (NSF), Department of Energy (DOE), and the Army Research Office (ARO), whose financial support made the workshop possible. Willard Miller, Jr. , Professor and Director v PREFACE Scientific and engineering computation has become so complex that traditional numerical computation on uniform meshes is generally not pos sible or too expensive. Mesh generation must reflect both the domain geometry and the expected solution characteristics. Meshes should, fur thermore, be related to the solution through computable estimates of dis cretization errors. This, suggests an automatic and adaptive process where an initial mesh is enriched with the goal of computing a solution with prescribed accuracy specifications in an optimal manner. While automatic mesh generation procedures and adaptive strategies are becoming available, major computational challenges remain. Three-dimensional mesh genera tion is still far from automatic.

Adaptive Grid Generation

Adaptive Grid Generation PDF

Author: Patrick J. Roache

Publisher:

Published: 1986

Total Pages: 8

ISBN-13:

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Algorithms were developed for the generation of grids in 2D and 3D. The 3D code development involved extensive use of computer Symbolic Manipulation. A rigorous code validation procedure was developed. A controversy on the effect of strong coordinate stretching was resolved, with proof that the order of accuracy is not reduced. The contention that a well known method always produces a nonfolded grid was disproven. A family of adaptive algorithms was developed, involving both interior adaption and especially boundary adaption. Initial work was begun on an extension of the variational approach to grid generation. The grid generation algorithms have been applied in the 2D and 3D ELF codes (Electric Field) used in the design of laser electrodes and switches. Applications are in the Pulsed Power area, including SDI research and development. Keywords: adaptive grid generation; elliptic grid generation; symbolic manipulation; code verification; variational formulation; lasers; electrode design.

New Challenges in Grid Generation and Adaptivity for Scientific Computing

New Challenges in Grid Generation and Adaptivity for Scientific Computing PDF

Author: Simona Perotto

Publisher: Springer

Published: 2015-04-27

Total Pages: 326

ISBN-13: 3319060538

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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.

Grid Generation Methods

Grid Generation Methods PDF

Author: Vladimir D. Liseikin

Publisher: Springer Science & Business Media

Published: 2013-04-18

Total Pages: 363

ISBN-13: 3662039494

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This text is an introduction to methods of grid generation technology in scientific computing. Special attention is given to methods developed by the author for the treatment of singularly-perturbed equations, e.g. in modeling high Reynolds number flows. Functionals of conformality, orthogonality, energy and alignment are discussed.

Mesh Generation and Adaptation

Mesh Generation and Adaptation PDF

Author: Rubén Sevilla

Publisher: Springer Nature

Published: 2022-05-18

Total Pages: 328

ISBN-13: 3030925404

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The developments in mesh generation are usually driven by the needs of new applications and/or novel algorithms. The last decade has seen a renewed interest in mesh generation and adaptation by the computational engineering community, due to the challenges introduced by complex industrial problems.Another common challenge is the need to handle complex geometries. Nowadays, it is becoming obvious that geometry should be persistent throughout the whole simulation process. Several methodologies that can carry the geometric information throughout the simulation stage are available, but due to the novelty of these methods, the generation of suitable meshes for these techniques is still the main obstacle for the industrial uptake of this technology.This book will cover different aspects of mesh generation and adaptation, with particular emphasis on cutting-edge mesh generation techniques for advanced discretisation methods and complex geometries.

Computational Grids

Computational Grids PDF

Author: Graham F. Carey

Publisher: CRC Press

Published: 1997-05-01

Total Pages: 518

ISBN-13: 9781560326359

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In this comprehensive volume a treatment of grid generation, adaptive refinement, and redistribution techniques is developed together with supporting mathematical, algorithmic, and software concepts. Efficient solution strategies that exploit grid hierarchies are also described and analyzed. Emphasis is on the fundamental ideas, but the presentation includes practical guidelines for designing and implementing grid strategies.

Adaptive Atmospheric Modeling

Adaptive Atmospheric Modeling PDF

Author: Jörn Behrens

Publisher: Springer Science & Business Media

Published: 2007-06-25

Total Pages: 221

ISBN-13: 3540333835

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This is an overview of the development of adaptive techniques for atmospheric modeling. Written in an educational style, it functions as a starting point for readers interested in adaptive modeling, in atmospheric sciences and beyond. Coverage includes paradigms of adaptive techniques, such as error estimation and adaptation criteria. Mesh generation methods are presented for triangular/tetrahedral and quadrilateral/hexahedral meshes, with a special section on initial meshes for the sphere.

Handbook of Grid Generation

Handbook of Grid Generation PDF

Author: Joe F. Thompson

Publisher: CRC Press

Published: 1998-12-29

Total Pages: 1136

ISBN-13: 9781420050349

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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.