Composite Grid Techniques And Adaptive Mesh Refinement In Computational Fluid Dynamics
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Composite Grid Techniques And Adaptive Mesh Refinement In Computational Fluid Dynamics
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Author : Robertus Franciscus Van der Wijngaart
language : en
Publisher:
Release Date : 1989
Composite Grid Techniques And Adaptive Mesh Refinement In Computational Fluid Dynamics written by Robertus Franciscus Van der Wijngaart and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.
Adaptive Mesh Refinement Theory And Applications
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Author : Tomasz Plewa
language : en
Publisher: Springer Science & Business Media
Release Date : 2005-12-20
Adaptive Mesh Refinement Theory And Applications written by Tomasz Plewa 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 2005-12-20 with Mathematics categories.
Advanced numerical simulations that use adaptive mesh refinement (AMR) methods have now become routine in engineering and science. Originally developed for computational fluid dynamics applications these methods have propagated to fields as diverse as astrophysics, climate modeling, combustion, biophysics and many others. The underlying physical models and equations used in these disciplines are rather different, yet algorithmic and implementation issues facing practitioners are often remarkably similar. Unfortunately, there has been little effort to review the advances and outstanding issues of adaptive mesh refinement methods across such a variety of fields. This book attempts to bridge this gap. The book presents a collection of papers by experts in the field of AMR who analyze past advances in the field and evaluate the current state of adaptive mesh refinement methods in scientific computing.
Mesh Adaption Strategies For Vortex Dominated Flows
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Author : Sean Javad Kamkar
language : en
Publisher: Stanford University
Release Date : 2011
Mesh Adaption Strategies For Vortex Dominated Flows written by Sean Javad Kamkar and has been published by Stanford University this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
A new adaptive mesh refinement strategy that is based on a coupled feature-detection and error-estimation approach is developed. The overall goal is to apply the proper degree of refinement to key vortical features in aircraft and rotorcraft wakes. The refinement paradigm is based on a two-stage process wherein the vortical regions are initially identified for refinement using feature-detection, and then the appropriate resolution is determined by the local solution error. The feature-detection scheme uses a local normalization procedure that allows it to automatically identify regions for refinement with threshold values that are not dependent upon the convective scales of the problem. An error estimator, based on the Richardson Extrapolation method, then supplies the identified features with appropriate levels of refinement. The estimator is shown to be well-behaved for steady-state and time-accurate aerodynamic flows. The above strategy is implemented within the Helios code, which features a dual-mesh paradigm of unstructured grids in the near-body domain, and adaptive Cartesian grids in the off-body domain. A main objective of this work is to control the adaption process so that high fidelity wake resolution is obtained in the off-body domain. The approach is tested on several theoretical and practical vortex-dominated flow-fields in an attempt to resolve wingtip vortices and rotor wakes. Accuracy improvements to rotorcraft performance metrics and increased wake resolution are simultaneously documented.
Computational Methods For Fluid Dynamics
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Author : Joel H. Ferziger
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Computational Methods For Fluid Dynamics written by Joel H. Ferziger 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 Technology & Engineering categories.
A detailed description of the methods most often used in practice. The authors are experts in their fields and cover such advanced techniques as direct and large-eddy simulation of turbulence, multigrid methods, parallel computing, moving grids, structured, block-structured and unstructured boundary-fitted grids, and free surface flows. The book shows common roots and basic principles for many apparently different methods, while also containing a great deal of practical advice for code developers and users. All the computer codes can be accessed from the Springer server on the internet. Designed to be equally useful for beginners and experts.
Adaptive Local Grid Refinement In Computational Fluid Mechanics
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Author : Richard E. Ewing
language : en
Publisher:
Release Date : 1987
Adaptive Local Grid Refinement In Computational Fluid Mechanics written by Richard E. Ewing and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
Several promising new techniques for efficient and accurate numerical solution of large-scale fluid flow problems have been developed. These methods include self-adaptive mesh modification techniques for applications requiring front-tracking and local grid refinement as well as new preconditioning ideas for efficient implementation. Properties of systems of hyperbolic conservation laws have been obtained which will aid in development of accurate front-tracking algorithms. Adaptive grid refinement techniques developed include moving grid methods, local, fixed refinement involving linked-list data structures, and certain local patch refinement ideas which have great potential for ease of implementation in existing large scale codes. Domain decomposition concepts for obtaining efficient preconditioners for iterative techniques have proved quite useful both for local patch refinement and for the solution of problems with rapidly varying coefficients. The fast adaptive algorithms being developed have high potential for both parallelization and vectorization. The algorithms have been designed to take advantage of the emerging parallel and vector-oriented computer architectures. Finally, the incorporation of these fast algorithms in accurate finite element, collocation, and finite difference methods is underway.
Computations Of Unsteady Viscous Compressible Flows Using Adaptive Mesh Refinement In Curvilinear Body Fitted Grid Systems
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Author : Erlendur Steinthorsson
language : en
Publisher:
Release Date : 1994
Computations Of Unsteady Viscous Compressible Flows Using Adaptive Mesh Refinement In Curvilinear Body Fitted Grid Systems written by Erlendur Steinthorsson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Viscous flow categories.
Chimera
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Author : J. A. Benek
language : en
Publisher:
Release Date : 1986
Chimera written by J. A. Benek and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Computational fluid dynamics categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1995
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Mesh Generation And Adaptation
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Author : Rubén Sevilla
language : en
Publisher: Springer Nature
Release Date : 2022-05-18
Mesh Generation And Adaptation written by Rubén Sevilla and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-05-18 with Mathematics categories.
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.
Applied Computational Fluid Dynamics Techniques
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Author : Rainald Löhner
language : en
Publisher: John Wiley & Sons
Release Date : 2008-04-30
Applied Computational Fluid Dynamics Techniques written by Rainald Löhner and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-04-30 with Science categories.
Computational fluid dynamics (CFD) is concerned with the efficient numerical solution of the partial differential equations that describe fluid dynamics. CFD techniques are commonly used in the many areas of engineering where fluid behavior is an important factor. Traditional fields of application include aerospace and automotive design, and more recently, bioengineering and consumer and medical electronics. With Applied Computational Fluid Dynamics Techniques, 2nd edition, Rainald Löhner introduces the reader to the techniques required to achieve efficient CFD solvers, forming a bridge between basic theoretical and algorithmic aspects of the finite element method and its use in an industrial context where methods have to be both as simple but also as robust as possible. This heavily revised second edition takes a practice-oriented approach with a strong emphasis on efficiency, and offers important new and updated material on; Overlapping and embedded grid methods Treatment of free surfaces Grid generation Optimal use of supercomputing hardware Optimal shape and process design Applied Computational Fluid Dynamics Techniques, 2nd edition is a vital resource for engineers, researchers and designers working on CFD, aero and hydrodynamics simulations and bioengineering. Its unique practical approach will also appeal to graduate students of fluid mechanics and aero and hydrodynamics as well as biofluidics.