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Analytic Element Method: Complex Interactions of Boundaries and Interfaces [Hardback]

(Professor and Chair, Department of Civil and Environmental Engineering, North Dakota State University)
  • Formāts: Hardback, 338 pages, height x width x depth: 253x195x23 mm, weight: 862 g
  • Izdošanas datums: 17-Sep-2020
  • Izdevniecība: Oxford University Press
  • ISBN-10: 0198856784
  • ISBN-13: 9780198856788
  • Hardback
  • Cena: 132,74 €
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  • Formāts: Hardback, 338 pages, height x width x depth: 253x195x23 mm, weight: 862 g
  • Izdošanas datums: 17-Sep-2020
  • Izdevniecība: Oxford University Press
  • ISBN-10: 0198856784
  • ISBN-13: 9780198856788
"Analytic Element Method" (AEM) assembles a broad range of mathematical and computational approaches to solve important problems in engineering and science. As the subtitle "Complex Interactions of Boundaries and Interfaces" suggests, problems are partitioned into sets of elements and methods are formulated to solve conditions along their boundaries and interfaces. Presentation will place an element within its landscape, formulate its interactions with other elements using linear series of influence functions, and then solve for its coefficients to match its boundary and interface conditions. Computational methods enable boundary and interface conditions of closely interacting elements to be matched with nearly exact precision, commonly to within 8-12 significant digits. Comprehensive solutions provide elements that collectively interact and shape the environment within which they exist.

This work is grounded in a wide range of foundational studies, using exact solutions for important boundary value problems. However, the computational capacity of their times limited solutions to idealized problems, commonly involving a single isolated element within a uniform regional background. With the advent of modern computers, such mathematically based methods were passed over by many, in the pursuit of discretized domain solutions using finite element and finite difference methods. Yet, the elegance of the mathematical foundational studies remains, and the rationale for the Analytic Element Method was inspired by the realization that computational advances could also lead to advances in the mathematical methods that were unforeseeable in the past.

Recenzijas

Review from previous edition Dr. Steward's book Analytic Element Method: Complex Interactions of Boundaries and Interfaces clearly outlines the mathematical foundations of Analytic Element Method (AEM) modeling techniques. The book could serve as a fine text for graduate-level courses on analytic modeling. * Charlie Fitts, Fitts Geosolutions, LLC *

1 Analytic Element Method across Fields of Study
1(70)
1.1 Philosophical Perspective
1(4)
1.2 Studies of Flow and Conduction
5(36)
1.2.1 Groundwater How: Head and Discharge
9(12)
1.2.2 Vadose Zone How: Pressure and Seepage Velocity
21(6)
1.2.3 Incompressible Fluid Flow: Pressure and Velocity
27(4)
1.2.4 Thermal Conduction: Temperature and Heat Flux
31(6)
1.2.5 Electrostatics: Voltage and Electric Fields
37(4)
1.3 Studies of Periodic Waves
41(14)
1.3.1 Water Waves: Amplitude and Phase
45(6)
1.3.2 Acoustics: Intensity and Vibration
51(4)
1.4 Studies of Deformation by Forces
55(13)
1.4.1 Elasticity: Stress and Displacement
61(7)
Further Reading
68(3)
2 Foundation of the Analytic Element Method
71(32)
2.1 The Analytic Element Method Paradigm
71(7)
2.1.1 Principle 1: Partitioning a Problem Domain into Elements
71(2)
2.1.2 Principle 2: Linear Superposition of Influence Functions
73(2)
2.1.3 Principle 3: Conditions at Control Points
75(1)
2.1.4 Principle 4: Collective Solutions of Interacting Elements
76(2)
2.2 Solving Systems of Equations to Match Boundary Conditions
78(14)
2.2.1 Linear Regression: Minimizing a Least Squares Objective Function
79(7)
2.2.2 Fourier Series: Orthogonal Periodic Solutions
86(3)
2.2.3 Non-linear Boundary Conditions
89(3)
2.3 Consistent Notation for Boundary Value Problems
92(8)
2.3.1 Boundary and Interface Conditions
92(4)
2.3.2 Mathematical Representation using Complex Variables
96(4)
Further Reading
100(3)
3 Analytic Elements from Complex Functions
103(62)
3.1 Point Elements in a Uniform Vector Field
103(6)
3.2 Domains with Circular Boundaries
109(10)
3.2.1 Laurent Series for Solutions outside Circles
110(3)
3.2.2 Taylor Series for Solutions inside a Circle
113(3)
3.2.3 Circular Interfaces with Continuity Conditions
116(3)
3.3 Ellipse Elements with Continuity Conditions
119(5)
3.4 Slit Element Formulation: Courant's Sewing Theorem with Circle Elements
124(14)
3.4.1 Slit-Dipole: Boundaries with Continuous Potential
128(3)
3.4.2 Slit-Doublet: Boundaries with Continuous Stream Function
131(3)
3.4.3 Slit-Sink and Slit-Vortex: Divergence and Circulation
134(4)
3.5 Circular Arcs and Joukowsky's Wing
138(3)
3.6 Complex Vector Fields with Divergence and Curl
141(5)
3.7 Biharmonic Equation and the Kolosov Formulas
146(17)
3.7.1 Biharmonic Solutions for Domains outside Circles
149(9)
3.7.2 Biharmonic Elements for Circular Interfaces and Slits
158(5)
Further Reading
163(2)
4 Analytic Elements from Separation of Variables
165(62)
4.1 Overview
165(3)
4.2 Separation for One-Dimensional Problems
168(5)
4.2.1 One-Dimensional Helmholtz Equation for Waves
169(3)
4.2.2 One-Dimensional Modified Helmholtz Equation
172(1)
4.3 Separation in Cartesian Coordinates
173(11)
4.3.1 Rectangle Elements for Laplace and Poisson Equations
173(8)
4.3.2 Interconnected Rectangular Domains
181(3)
4.4 Separation in Circular-Cylindrical Coordinates
184(24)
4.4.1 Radial Waves Emanating from a Point
185(1)
4.4.2 Waves around Circle Elements
186(9)
4.4.3 Waves through Circle Elements
195(7)
4.4.4 Circle Elements with Modified Helmholtz Equation
202(6)
4.5 Separation in Spherical Coordinates
208(7)
4.5.1 Radial Waves Emanating from a Point
209(1)
4.5.2 Three-Dimensional Solutions for Spherical Objects
210(5)
4.6 Separation in Spheroidal Coordinates
215(9)
4.6.1 Three-Dimensional Solutions for Prolate Spheroids
215(5)
4.6.2 Three-Dimensional Solutions for Oblate Spheroids
220(4)
Further Reading
224(3)
5 Analytic Elements from Singular Integral Equations
227(58)
5.1 Formulation of Singular Integral Equations
227(4)
5.2 Double-Layer Elements
231(11)
5.2.1 Line-Dipole: Boundaries with Discontinuous Stream Function
233(5)
5.2.2 Line-Doublet: Boundaries with Discontinuous Potential
238(4)
5.3 Single-Layer Elements
242(9)
5.3.1 Line-Sink: Boundaries with Divergence and Discontinuous vn
244(4)
5.3.2 Line-Vortex: Boundaries with Circulation and Discontinuous vs
248(3)
5.4 Simpler Far-Field Representation
251(7)
5.4.1 Far-Field Expansions for Double-and Single-Layer Elements
251(3)
5.4.2 Single Layers versus Double Layers with a Point Element
254(4)
5.5 Polygon Elements
258(5)
5.5.1 Heterogeneities
258(2)
5.5.2 Simpler Far-Fields for Functions Gathered within Polygons
260(3)
5.6 Curvilinear Elements
263(8)
5.6.1 Formulation of Curvilinear Elements
263(3)
5.6.2 Curvilinear Double Layers and Single Layers
266(2)
5.6.3 Bell Polynomials
268(3)
5.7 Three-Dimensional Vector Fields
271(12)
5.7.1 Point-Sinks, Line-Sinks, and the Method of Images
273(3)
5.7.2 The Vector Potential
276(7)
Further Reading
283(2)
A List of Symbols 285(2)
B Solutions to Alternate Problem Sets 287(28)
References 315(8)
Index 323
Professor David R. Steward is chair of the Department of Civil and Environmental Engineering at North Dakota State University and holds the Walter B. Booth Distinguished Professorship. Dr. Steward teaches courses in groundwater flow, water resources, hydraulics and engineering mathematics. He is licensed as a Professional Engineer (North Dakota and Minnesota) and a Professional Geoscientist (Texas), and is a Fellow of the American Society of Civil Engineers.