Autore	Löhner Rainald
Edizione	[2nd ed.]
Pubbl/distr/stampa	Chichester ; ; New York, : Wiley, c2008
Descrizione fisica	1 online resource (539 p.)
Disciplina	620.1/064 620.1064
Soggetto topico	Fluid dynamics - Mathematics Numerical analysis Finite element method
Soggetto genere / forma	Electronic books.
ISBN	1-282-12393-9 9786612123931 0-470-98974-2 0-470-98966-1
Formato	Materiale a stampa
Livello bibliografico	Monografia
Lingua di pubblicazione	eng
Nota di contenuto	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
Record Nr.	UNINA-9910144429603321

Pubbl/distr/stampa	New York, : Nova Science Publishers, c2008
Descrizione fisica	1 online resource (106 p.)
Disciplina	621.31/2429015118
Altri autori (Persone)	ZervasP. L
Soggetto topico	Fuel cells - Mathematical models Fluid dynamics - Data processing Fluid dynamics - Mathematics
Soggetto genere / forma	Electronic books.
ISBN	1-60876-297-1
Formato	Materiale a stampa
Livello bibliografico	Monografia
Lingua di pubblicazione	eng
Nota di contenuto	""CFD MODELING AND OPTIMIZATION OF FUEL-CELL SYSTEMS""; ""NOTICE TO THE READER""; ""ACKNOWLEDGEMENTS""; ""CONTENTS""; ""PREFACE""; ""NOMENCLATURE""; ""ABBREVIATIONS""; ""INTRODUCTION""; ""BASIC OPERATIONAL PRINCIPLES""; ""2.1. FUEL CELL DESCRIPTION""; ""2.2. MAXIMUM ELECTROMOTIVE FORCE (EMF) OR OPEN CIRCUIT VOLTAGE (OCV)""; ""2.3. CURRENT DENSITY-POWER DENSITY""; ""2.4. FUEL-CELL EFFICIENCY""; ""2.5. NERNST EQUATION""; ""2.6. IRREVERSIBLE PROCESSES UNDER OPERATING CONDITIONS""; ""2.6.1. Activation Polarization (Î?Vact)""; ""2.6.2. Ohmic Losses (Î?Vohmic)"" ""2.6.3. Concentration Polarization (Î?Vconc)""""2.6.4. Total Losses""; ""2.7. ELECTROCHEMICAL REACTION RATES""; ""2.8. FUEL CELL OPERATING PARAMETERS""; ""THE MATHEMATICAL MODEL""; ""3.1. THE EQUATIONS""; ""3.2. MODEL ASSUMPTIONS""; ""3.3. BOUNDARY CONDITIONS-SPECIAL INTERNAL CONDITIONS""; ""NUMERICAL SOLUTION METHOD""; ""4.1. INTRODUCTION""; ""4.2. THE SOLUTION METHOD""; ""4.3. NUMERICAL SOLUTION""; ""4.4. MODEL APPLICATION""; ""4.4.1. Fuel Cell Geometry""; ""4.4.2. Boundary Conditions""; ""4.4.3. Grid-Independency Studies â€? Computer Requirements""; ""RESULTS""; ""5.1. INTRODUCTION"" ""5.3.1. Fuel and Oxidant inlet Volumetric Rates, Qf, Qox""""5.3.2. Fuel and Oxidant Gases""; ""5.3.3. Operating Cell Voltage""; ""5.3.4. Fuel cell Power""; ""5.3.5. Fuel Cell Efficiency""; ""5.3.6. Influence of Oxidant Gas Inlet Volumetric Rate in Fuel Cell Performance""; ""5.3.7. Choice of m, n Coefficients""; ""CONCLUSION""; ""APPENDIX""; ""A.1. ACTIVATION OVERPOTENTIAL""; ""A.2. MODEL VALIDATION""; ""A.3. EMPIRICAL EQUATION FOR THE MASS TRANSPORT LOSSES ESTIMATION""; ""REFERENCES""; ""INDEX""
Record Nr.	UNINA-9910452194103321

Pubbl/distr/stampa	Boca Raton : , : Chapman and Hall/CRC, , 2011
Descrizione fisica	1 online resource (xxxi, 375 p. ) : ill
Disciplina	532.00285
Altri autori (Persone)	MagoulesF (Frederic)
Collana	Chapman and Hall/CRC numerical analysis and scientific computation series
Soggetto topico	Fluid dynamics - Mathematics Numerical analysis
Soggetto genere / forma	Electronic books.
ISBN	0-429-10757-9 1-283-31172-0 9786613311726 1-4398-5662-1
Formato	Materiale a stampa
Livello bibliografico	Monografia
Lingua di pubblicazione	eng
Nota di contenuto	Finite Volumes Methods , Jerome Boudet Introduction Conservativity Control volume integration Grid General flux interpolation Resolution and time discretization Consistency, stability, and convergence Upwind interpolation Particular case of structured grids Boundary conditions Weighted Residuals Methods , Fabien Godeferd Introduction Principles of the weighted residuals method Collocation or pseudo-spectral method Least squares method Method of moments Galerkin approximation Subdomains An example Spectral Methods , Fabien Godeferd Introduction Linear problem: Galerkin, tau, and collocation methods Applications: Fourier Applications: Chebyshev Implicit equations Evaluation of nonlinear terms Smoothed-Particle Hydrodynamics (SPH) Methods , Francis Leboeuf and Jean-Christophe Marongiu Introduction SPH approximation of a function Properties of the kernel function W Barycenter of D(x i ) Choices of the kernel function W SPH approximation of differential operators applied on a function Using a Taylor series expansion Concluding remarks Application of SPH Methods to Conservation Equations , Francis Leboeuf and Jean-Christophe Marongiu General form of conservation equation Weak SPH-ALE formulation of the conservation equations Application to flow conservation equations Boundary conditions Applications of SPH and SPH-ALE methods Finite Volume Particle Methods (FVPM) , Francis Leboeuf and Jean-Christophe Marongiu Introduction Partition of unity Average of a function Derivatives of ? Conservation equation and FVPM Concluding remarks Numerical Algorithms for Unstructured Meshes , Bruno Koobus, Frederic Alauzet, and Alain Dervieux Introduction Spatial representation Toward higher spatial order Positivity of mixed element-volume formulations 3D multi-scales anisotropic mesh adaptation 3D goal-oriented anisotropic mesh adaptation Concluding remarks LES, Variational Multiscale LES, and Hybrid Models , Hilde Ouvrard, Maria-Vittoria Salvetti, Simone Camarri, Stephen Wornom, Alain Dervieux, and Bruno Koobus Introduction Numerical model Large eddy simulation (LES) Variational multiscale large eddy simulation (VMS-LES) Hybrid RANS/LES Concluding remarks Numerical Algorithms for Free Surface Flow , Alexandre Caboussat, Guillaume Jouvet, Marco Picasso, and Jacques Rappaz Introduction A short review on two-phases flow with free surfaces Some preliminary remarks on ice and glacier modeling Modeling Time splitting scheme A two-grids method for space discretization Modeling of interfacial effects Numerical results for liquid flow Numerical results for ice flow Concluding remarks Bibliography
Record Nr.	UNINA-9910464670303321

Edizione	[1st ed.]
Pubbl/distr/stampa	Boca Raton : , : Chapman and Hall/CRC, , 2011
Descrizione fisica	1 online resource (xxxi, 375 p. ) : ill
Disciplina	532.00285
Altri autori (Persone)	MagoulesF (Frederic)
Collana	Chapman and Hall/CRC numerical analysis and scientific computation series
Soggetto topico	Fluid dynamics - Mathematics Numerical analysis
ISBN	0-429-10757-9 1-283-31172-0 9786613311726 1-4398-5662-1
Classificazione	MAT021000SCI055000TEC009070
Formato	Materiale a stampa
Livello bibliografico	Monografia
Lingua di pubblicazione	eng
Nota di contenuto	Finite Volumes Methods , Jerome Boudet Introduction Conservativity Control volume integration Grid General flux interpolation Resolution and time discretization Consistency, stability, and convergence Upwind interpolation Particular case of structured grids Boundary conditions Weighted Residuals Methods , Fabien Godeferd Introduction Principles of the weighted residuals method Collocation or pseudo-spectral method Least squares method Method of moments Galerkin approximation Subdomains An example Spectral Methods , Fabien Godeferd Introduction Linear problem: Galerkin, tau, and collocation methods Applications: Fourier Applications: Chebyshev Implicit equations Evaluation of nonlinear terms Smoothed-Particle Hydrodynamics (SPH) Methods , Francis Leboeuf and Jean-Christophe Marongiu Introduction SPH approximation of a function Properties of the kernel function W Barycenter of D(x i ) Choices of the kernel function W SPH approximation of differential operators applied on a function Using a Taylor series expansion Concluding remarks Application of SPH Methods to Conservation Equations , Francis Leboeuf and Jean-Christophe Marongiu General form of conservation equation Weak SPH-ALE formulation of the conservation equations Application to flow conservation equations Boundary conditions Applications of SPH and SPH-ALE methods Finite Volume Particle Methods (FVPM) , Francis Leboeuf and Jean-Christophe Marongiu Introduction Partition of unity Average of a function Derivatives of ? Conservation equation and FVPM Concluding remarks Numerical Algorithms for Unstructured Meshes , Bruno Koobus, Frederic Alauzet, and Alain Dervieux Introduction Spatial representation Toward higher spatial order Positivity of mixed element-volume formulations 3D multi-scales anisotropic mesh adaptation 3D goal-oriented anisotropic mesh adaptation Concluding remarks LES, Variational Multiscale LES, and Hybrid Models , Hilde Ouvrard, Maria-Vittoria Salvetti, Simone Camarri, Stephen Wornom, Alain Dervieux, and Bruno Koobus Introduction Numerical model Large eddy simulation (LES) Variational multiscale large eddy simulation (VMS-LES) Hybrid RANS/LES Concluding remarks Numerical Algorithms for Free Surface Flow , Alexandre Caboussat, Guillaume Jouvet, Marco Picasso, and Jacques Rappaz Introduction A short review on two-phases flow with free surfaces Some preliminary remarks on ice and glacier modeling Modeling Time splitting scheme A two-grids method for space discretization Modeling of interfacial effects Numerical results for liquid flow Numerical results for ice flow Concluding remarks Bibliography
Record Nr.	UNINA-9910809176503321

Autore	Zikanov Oleg
Pubbl/distr/stampa	Hoboken, N.J., : Wiley, c2010
Descrizione fisica	1 online resource (320 p.)
Disciplina	532/.0501515
Soggetto topico	Fluid dynamics - Mathematics
Soggetto genere / forma	Electronic books.
ISBN	1-118-17439-9 1-283-25818-8 9786613258182 1-118-17477-1
Formato	Materiale a stampa
Livello bibliografico	Monografia
Lingua di pubblicazione	eng
Nota di contenuto	Essential Computational Fluid Dynamics; Contents; Preface; 1 What Is CFD?; 1.1. Introduction; 1.2. Brief History of CFD; 1.3. Outline of the Book; References and Suggested Reading; I Fundamentals; 2 Governing Equations of Fluid Dynamics and Heat Transfer; 2.1. Preliminary Concepts; 2.2. Mass Conservation; 2.3. Conservation of Chemical Species; 2.4. Conservation of Momentum; 2.5. Conservation of Energy; 2.6. Equation of State; 2.7. Equations in Integral Form; 2.8. Equations in Conservation Form; 2.9. Equations in Vector Form; 2.10. Boundary Conditions; 2.10.1. Rigid Wall Boundary Conditions 2.10.2. Inlet and Exit Boundary Conditions2.10.3. Other Boundary Conditions; References and Suggested Reading; Problems; 3 Partial Differential Equations; 3.1. Model Equations; Formulation of a PDE Problem; 3.1.1. Model Equations; 3.1.2. Domain, Boundary, and Initial Conditions; 3.1.3. Equilibrium and Marching Problems; 3.1.4. Examples; 3.2. Mathematical Classification of PDE of Second Order; 3.2.1. Classification; 3.2.2. Hyperbolic Equations; 3.2.3. Parabolic Equations; 3.2.4. Elliptic Equations; 3.3. Numerical Discretization: Different Kinds of CFD; 3.3.1. Spectral Methods 4.2.7. Truncation Error of Linear Interpolation4.3. Approximation of Partial Differential Equations; 4.3.1. Approach and Examples; 4.3.2. Interpretation of Truncation Error: Numerical Dissipation and Dispersion; 4.3.3. Boundary and Initial Conditions; 4.3.4. Consistency of Numerical Approximation; 4.3.5. System of Difference Equations; 4.3.6. Implicit and Explicit Methods; 4.4. Development of Finite Difference Schemes; 4.4.1. Taylor Series Expansions; 4.4.2. Polynomial Fitting; References and Suggested Reading; Problems; 5 Finite Volume Method; 5.1. Introduction and Integral Formulation 5.1.1. Finite Volume Grid5.1.2. Global Conservation Property; 5.2. Approximation of Integrals; 5.2.1. Volume Integrals; 5.2.2. Surface Integrals; 5.3. Methods of Interpolation; 5.3.1. Upwind Interpolation; 5.3.2. Linear Interpolation; 5.3.3. Upwind Interpolation of Higher Order; 5.3.4. Interpolation on Nonorthogonal Grids; 5.4. Boundary Conditions; References and Suggested Reading; Problems; 6 Stability of Transient Solutions; 6.1. Introduction and Definition of Stability; 6.1.1. Discretization and Round-off Error; 6.1.2. Definition; 6.2. Stability Analysis; 6.2.1. Neumann Method 6.2.2. Matrix Method
Record Nr.	UNINA-9910464594103321