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UID:

Umfang: 1 online resource (xviii, 519 pages) : , illustrations

Ausgabe: 2nd ed.

ISBN: 9780470989746 , 0470989742 , 9780470989661 , 0470989661

Inhalt: Essential reading for practitioners and graduates wishing to develop a complete knowledge of CFD techniques and fluid behaviour, this new edition contains updated material as well as new chapters on overlapping grids, embedded grid techniques, free surfaces and optimal shape design.

Anmerkung: Introduction and general considerations. The CFD code ; Porting research codes to an industrial context ; Scope of the book -- Data structures and algorithms. Representation of a grid ; Derived data structures for static data ; Derived data structures for dynamic data ; Sorting and searching ; Proximity in space ; Nearest neighbours and graphs ; Distance to surface -- Grid generation. Description of the domain to be gridded ; Variation of element size and shape ; Element type ; Automatic grid generation methods ; Other grid generation methods ; The advancing front technique ; Delaunay triangulation ; Grid improvement ; Optimal space-filling tetrahedra ; Grids with uniform cores ; Volume-to-surface meshing ; Navier-Stokes gridding techniques ; Filling space with points/arbitrary objects ; Applications -- Approximation theory. The basic problem ; Choice of trial functions ; General properties of shape-functions ; Weighted residual methods with local functions ; Effort vs. accuracy -- Approximation of operators ; Classification of methods ; The Laplace operator ; Recovery of derivatives ; Spectral elements -- Temporal approximation ; Explicit schemes ; Implicit schemes ; A word of caution -- Solution of large systems of equations. Direct solvers ; Iterative solvers ; Preconditioning ; Approximate factorization ; Snakes and linelets ; Multigrid methods -- Simple Euler/Navier-Stokes solvers. Galerkin approximation ; Lax-Wendroff (Taylor-Galerkin) ; Solving for the consistent mass matrix ; Artificial viscosities ; Boundary conditions ; Viscous fluxes ; Applications -- Flux-corrected transport schemes. The FCT concept ; Algorithmic implementation ; Steepening ; FCT for Taylor-Galerkin schemes ; Limiting for systems of equations ; Applications -- Edge-based compressible flow solvers ; The Laplacian operator ; First derivatives: first form ; First derivatives: second form ; Edge-based schemes for advection-dominated PDE's -- Incompressible flow solvers. The advection operator ; The divergence operator ; Artificial compressibility ; Temporal discretization: projection schemes ; Temporal discretization: implicit schemes ; Examples -- Mesh movement. The ALE frame of reference ; Geometric conservation law ; Mesh movement algorithms ; Region of moving elements ; PDE-based distance functions ; Penalization of deformed elements ; Special movement techniques for RANS grids ; Remeshing concepts ; Applications -- Interpolation. Basic interpolation algorithm ; Fastest 1-time algorithm: brute force ; Fastest N-time algorithm: octree search ; Fastest known vicinity algorithm: neighbour-to-neighbour ; Fastest grid to grid algorithm: advancing front vicinity ; Conservative interpolation ; Surface-grid to surface-grid interpolation ; Particle-grid interpolation -- Adaptive mesh refinement ; Optimal mesh criteria ; Error indicators/estimators ; Mesh refinement strategies ; Mesh movement ; Mesh enrichment ; Remeshing ; Hybrid methods ; Applications -- Efficient use of supercomputer hardware ; Reduction of cache-misses ; Vector machines ; SIMD machines ; MIMD machines -- Spacemarching and deactivation ; Spacemarching ; Macro-blocking ; Deactivation -- Overlapping grids. Interpolation criteria ; External boundaries and domains ; Examples -- Embedded grid techniques ; Kinetic treatment of embedded objects ; Kinematic treatment of embedded surfaces ; Deactivation of interior regions ; Extrapolation of the solution ; Adaptive mesh refinement ; Load/flux transfer ; Treatment of gaps or cracks ; Direct link to particles ; Examples -- Treatment of free surfaces. Interface fitting methods ; Examples for interface fitting methods ; Interface capturing methods ; Examples for interface capturing methods -- Optimal shape design. The general optimization problem ; Optimization techniques ; Adjoint solvers ; Geometric constraints ; Approximate gradients ; Multipoint optimization ; Representation of surface changes ; Hierarchical design procedures ; Topological optimization via porosities ; Examples.

Weitere Ausg.: Print version: Löhner, Rainald. Applied computational fluid dynamics techniques. Chichester, England ; Hoboken, NJ : John Wiley & Sons, ©2008 ISBN 9780470519073

Weitere Ausg.: ISBN 047051907X

Sprache: Englisch

Schlagwort(e): Electronic books. ; Electronic books. ; Electronic books.

DOI: 10.1002/9780470989746

URL: https://onlinelibrary.wiley.com/doi/book/10.1002/9780470989746

URL: https://onlinelibrary.wiley.com/doi/book/10.1002/9780470989746

URL: https://onlinelibrary.wiley.com/doi/book/10.1002/9780470989746

UID:

Umfang: XVIII, 519 S. , Ill., graph. Darst.

Ausgabe: 2. ed.

ISBN: 047051907X , 9780470519073

Anmerkung: Nebentitel: Applied CFD techniques

Sprache: Englisch

Fachgebiete: Physik

Schlagwort(e): Numerische Strömungssimulation ; Finite-Elemente-Methode

URL: Beschreibung für Leser

URL: Inhaltsverzeichnis

UID:

Umfang: 1 online resource (539 p.)

Ausgabe: 2nd ed.

ISBN: 1-282-12393-9 , 9786612123931 , 0-470-98974-2 , 0-470-98966-1

Inhalt: 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 betwee

Anmerkung: Description based upon print version of record. , APPLIED COMPUTATIONAL FLUID DYNAMICS TECHNIQUES; CONTENTS; Index; FOREWORD TO THE SECOND EDITION; ACKNOWLEDGEMENTS; 1 INTRODUCTION AND GENERAL CONSIDERATIONS; 1.1 The CFD code; 1.2 Porting research codes to an industrial context; 1.3 Scope of the book; 2 DATA STRUCTURES AND ALGORITHMS; 2.1 Representation of a grid; 2.2 Derived data structures for static data; 2.2.1 Elements surrounding points - linked lists; 2.2.2 Points surrounding points; 2.2.3 Elements surrounding elements; 2.2.4 Edges; 2.2.5 External faces; 2.2.6 Edges of an element; 2.3 Derived data structures for dynamic data , 2.3.1 N-trees2.4 Sorting and searching; 2.4.1 Heap lists; 2.5 Proximity in space; 2.5.1 Bins; 2.5.2 Binary trees; 2.5.3 Quadtrees and octrees; 2.6 Nearest-neighbours and graphs; 2.7 Distance to surface; 3 GRID GENERATION; 3.1 Description of the domain to be gridded; 3.1.1 Analytical functions; 3.1.2 Discrete data; 3.2 Variation of element size and shape; 3.2.1 Internal measures of grid quality; 3.2.2 Analytical functions; 3.2.3 Boxes; 3.2.4 Point/line/surface sources; 3.2.5 Background grids; 3.2.6 Element size attached to CAD data; 3.2.7 Adaptive background grids , 3.2.8 Surface gridding with adaptive background grids3.3 Element type; 3.4 Automatic grid generation methods; 3.5 Other grid generation methods; 3.6 The advancing front technique; 3.6.1 Checking the intersection of faces; 3.6.2 Data structures to minimize search overheads; 3.6.3 Additional techniques to increase speed; 3.6.4 Additional techniques to enhance reliability; 3.7 Delaunay triangulation; 3.7.1 Circumsphere calculations; 3.7.2 Data structures to minimize search overheads; 3.7.3 Boundary recovery; 3.7.4 Additional techniques to increase speed , 3.7.5 Additional techniques to enhance reliability and quality3.8 Grid improvement; 3.8.1 Removal of bad elements; 3.8.2 Laplacian smoothing; 3.8.3 Grid optimization; 3.8.4 Selective mesh movement; 3.8.5 Diagonal swapping; 3.9 Optimal space-filling tetrahedra; 3.10 Grids with uniform cores; 3.11 Volume-to-surface meshing; 3.12 Navier-Stokes gridding techniques; 3.12.1 Design criteria for RANS gridders; 3.12.2 Smoothing of surface normals; 3.12.3 Point distribution along normals; 3.12.4 Subdivision of prisms into tetrahedra; 3.12.5 Element removal criteria , 3.13 Filling space with points/arbitrary objects3.13.1 The advancing front space-filling algorithm; 3.13.2 Point/object placement stencils; 3.13.3 Boundary consistency checks; 3.13.4 Maximum compaction techniques; 3.13.5 Arbitrary objects; 3.13.6 Deposition patterns; 3.14 Applications; 3.14.1 Space shuttle ascend configuration; 3.14.2 Pilot ejecting from F18; 3.14.3 Circle of Willis; 3.14.4 Generic submarine body; 3.14.5 Ahmed car body; 3.14.6 Truck; 3.14.7 Point cloud for F117; 3.14.8 Hopper filled with beans/ellipsoids; 3.14.9 Cube filled with spheres of different sizes , 4 APPROXIMATION THEORY , English

Weitere Ausg.: ISBN 0-471-49843-2

Weitere Ausg.: ISBN 0-470-51907-X

Sprache: Englisch