Generalized Collocation Methods

Generalized Collocation Methods PDF Author: Nicola Bellomo
Publisher: Springer Science & Business Media
ISBN: 0817646108
Category : Mathematics
Languages : en
Pages : 206

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Book Description
Analysis of nonlinear models and problems is crucial in the application of mathematics to real-world problems. This book approaches this important topic by focusing on collocation methods for solving nonlinear evolution equations and applying them to a variety of mathematical problems. These include wave motion models, hydrodynamic models of vehicular traffic flow, convection-diffusion models, reaction-diffusion models, and population dynamics models. The book may be used as a textbook for graduate courses on collocation methods, nonlinear modeling, and nonlinear differential equations. Examples and exercises are included in every chapter.

Generalized Collocation Methods

Generalized Collocation Methods PDF Author: Nicola Bellomo
Publisher: Springer Science & Business Media
ISBN: 0817646108
Category : Mathematics
Languages : en
Pages : 206

Get Book Here

Book Description
Analysis of nonlinear models and problems is crucial in the application of mathematics to real-world problems. This book approaches this important topic by focusing on collocation methods for solving nonlinear evolution equations and applying them to a variety of mathematical problems. These include wave motion models, hydrodynamic models of vehicular traffic flow, convection-diffusion models, reaction-diffusion models, and population dynamics models. The book may be used as a textbook for graduate courses on collocation methods, nonlinear modeling, and nonlinear differential equations. Examples and exercises are included in every chapter.

Generalized Collocation Method and Its Particular Cases and Comparative Analysis

Generalized Collocation Method and Its Particular Cases and Comparative Analysis PDF Author: Paul Shuleshko
Publisher:
ISBN:
Category : Differential equations
Languages : en
Pages : 76

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Book Description


Collocation and Galerkin Time-Stepping Methods

Collocation and Galerkin Time-Stepping Methods PDF Author: H. T. Huynh
Publisher: BiblioGov
ISBN: 9781289031084
Category :
Languages : en
Pages : 42

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Book Description
We study the numerical solutions of ordinary differential equations by one-step methods where the solution at tn is known and that at t(sub n+1) is to be calculated. The approaches employed are collocation, continuous Galerkin (CG) and discontinuous Galerkin (DG). Relations among these three approaches are established. A quadrature formula using s evaluation points is employed for the Galerkin formulations. We show that with such a quadrature, the CG method is identical to the collocation method using quadrature points as collocation points. Furthermore, if the quadrature formula is the right Radau one (including t(sub n+1)), then the DG and CG methods also become identical, and they reduce to the Radau IIA collocation method. In addition, we present a generalization of DG that yields a method identical to CG and collocation with arbitrary collocation points. Thus, the collocation, CG, and generalized DG methods are equivalent, and the latter two methods can be formulated using the differential instead of integral equation. Finally, all schemes discussed can be cast as s-stage implicit Runge-Kutta methods.

Trefftz and Collocation Methods

Trefftz and Collocation Methods PDF Author: Z-C. Li
Publisher: WIT Press
ISBN: 1845641531
Category : Technology & Engineering
Languages : en
Pages : 433

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Book Description
This title was reviewed in the January 2009 issue of Mathematical Reviews.

Collocation Methods for Volterra Integral and Related Functional Differential Equations

Collocation Methods for Volterra Integral and Related Functional Differential Equations PDF Author: Hermann Brunner
Publisher: Cambridge University Press
ISBN: 9780521806152
Category : Mathematics
Languages : en
Pages : 620

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Book Description
Publisher Description

Generalized Multipole Techniques for Electromagnetic and Light Scattering

Generalized Multipole Techniques for Electromagnetic and Light Scattering PDF Author: T. Wriedt
Publisher: Elsevier
ISBN: 0080532373
Category : Technology & Engineering
Languages : en
Pages : 273

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Book Description
This book is an edited volume of nine papers covering the different variants of the generalized multipole techniques (GMT). The papers were presented at the recent 3rd Workshop on Electromagnetics and Light Scattering - Theory and Applications, which focused on current GMT methods. These include the multiple multipole method (MMP), the discrete sources method (DSM), Yasuura's method, method of auxiliary sources and null-field method with discrete sources. Each paper presents a full theoretical description as well as some applications of the method in electrical engineering and optics. It also includes both 2D and 3D methods and other applications developed in the former Soviet Union and Japan.

Collocation and Galerkin Time-Stepping Methods

Collocation and Galerkin Time-Stepping Methods PDF Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781793962157
Category : Science
Languages : en
Pages : 40

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Book Description
We study the numerical solutions of ordinary differential equations by one-step methods where the solution at tn is known and that at t(sub n+1) is to be calculated. The approaches employed are collocation, continuous Galerkin (CG) and discontinuous Galerkin (DG). Relations among these three approaches are established. A quadrature formula using s evaluation points is employed for the Galerkin formulations. We show that with such a quadrature, the CG method is identical to the collocation method using quadrature points as collocation points. Furthermore, if the quadrature formula is the right Radau one (including t(sub n+1)), then the DG and CG methods also become identical, and they reduce to the Radau IIA collocation method. In addition, we present a generalization of DG that yields a method identical to CG and collocation with arbitrary collocation points. Thus, the collocation, CG, and generalized DG methods are equivalent, and the latter two methods can be formulated using the differential instead of integral equation. Finally, all schemes discussed can be cast as s-stage implicit Runge-Kutta methods. Huynh, H. T. Glenn Research Center NASA/TM-2011-216340, E-17277

Solution of Nonlinear Problems in Applied Sciences by Generalized Collocation Methods and Mathematica

Solution of Nonlinear Problems in Applied Sciences by Generalized Collocation Methods and Mathematica PDF Author: N. Bellomo
Publisher:
ISBN:
Category :
Languages : en
Pages : 30

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Book Description


Collocation Methods for Parabolic Equations in a Single Space Variable

Collocation Methods for Parabolic Equations in a Single Space Variable PDF Author: J.jr. Douglas
Publisher: Springer
ISBN: 3540383379
Category : Mathematics
Languages : en
Pages : 152

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Book Description


Generalized Differential and Integral Quadrature

Generalized Differential and Integral Quadrature PDF Author: Francesco Tornabene
Publisher: Società Editrice Esculapio
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 689

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Book Description
The main aim of this book is to analyze the mathematical fundamentals and the main features of the Generalized Differential Quadrature (GDQ) and Generalized Integral Quadrature (GIQ) techniques. Furthermore, another interesting aim of the present book is to shown that from the two numerical techniques mentioned above it is possible to derive two different approaches such as the Strong and Weak Finite Element Methods (SFEM and WFEM), that will be used to solve various structural problems and arbitrarily shaped structures. A general approach to the Differential Quadrature is proposed. The weighting coefficients for different basis functions and grid distributions are determined. Furthermore, the expressions of the principal approximating polynomials and grid distributions, available in the literature, are shown. Besides the classic orthogonal polynomials, a new class of basis functions, which depend on the radial distance between the discretization points, is presented. They are known as Radial Basis Functions (or RBFs). The general expressions for the derivative evaluation can be utilized in the local form to reduce the computational cost. From this concept the Local Generalized Differential Quadrature (LGDQ) method is derived. The Generalized Integral Quadrature (GIQ) technique can be used employing several basis functions, without any restriction on the point distributions for the given definition domain. To better underline these concepts some classical numerical integration schemes are reported, such as the trapezoidal rule or the Simpson method. An alternative approach based on Taylor series is also illustrated to approximate integrals. This technique is named as Generalized Taylor-based Integral Quadrature (GTIQ) method. The major structural theories for the analysis of the mechanical behavior of various structures are presented in depth in the book. In particular, the strong and weak formulations of the corresponding governing equations are discussed and illustrated. Generally speaking, two formulations of the same system of governing equations can be developed, which are respectively the strong and weak (or variational) formulations. Once the governing equations that rule a generic structural problem are obtained, together with the corresponding boundary conditions, a differential system is written. In particular, the Strong Formulation (SF) of the governing equations is obtained. The differentiability requirement, instead, is reduced through a weighted integral statement if the corresponding Weak Formulation (WF) of the governing equations is developed. Thus, an equivalent integral formulation is derived, starting directly from the previous one. In particular, the formulation in hand is obtained by introducing a Lagrangian approximation of the degrees of freedom of the problem. The need of studying arbitrarily shaped domains or characterized by mechanical and geometrical discontinuities leads to the development of new numerical approaches that divide the structure in finite elements. Then, the strong form or the weak form of the fundamental equations are solved inside each element. The fundamental aspects of this technique, which the author defined respectively Strong Formulation Finite Element Method (SFEM) and Weak Formulation Finite Element Method (WFEM), are presented in the book.