Book ChapterDOI
Wave propagation phenomena
Paul H. L. Groenenboom
- Vol. 2, pp 24-52
TLDR
In this paper, the authors describe the wave propagation phenomena of a disturbance with a definite speed (velocity of light, velocity of sound) and the specific properties of these waves are reflection, diffraction and interference, well known phenomena in physical optics.Abstract:
The phenomenon of wave propagation is encountered frequently in a variety of engineering disciplines. For the design of antennas the interaction with electromagnetic waves has to be known. For earthquake analysis the elastodynamic wave propagation is essential. Knowledge of surface waves of liquids is necessary for the design of harbours and dams, and for the design of pressure vessels and piping networks in several branches of industry pressure transient analyses are required. What these wave propagation phenomena have in common is that they describe the motion of a disturbance with a definite speed (velocity of light, velocity of sound). The specific properties of these waves are reflection,diffraction and interference,-well known phenomena in physical optics.read more
Citations
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Journal ArticleDOI
Computing aerodynamically generated noise
TL;DR: An overview and analysis of the problems associated with utilizing standard computational aerodynamics procedures for acoustic computations is provided, including assessments of several schemes for spatial and temporal differencing.
Journal ArticleDOI
Synchronization of Coupled Reaction–Diffusion Neural Networks With Directed Topology via an Adaptive Approach
Hao Zhang,Yin Sheng,Zhigang Zeng +2 more
TL;DR: This paper investigates the synchronization issue of coupled reaction–diffusion neural networks with directed topology via an adaptive approach by constructing appropriate energy function, and utilizing some analytical techniques to verify the effectiveness of the obtained theoretical results.
Journal ArticleDOI
On fundamental solutions for the boundary integral equations method in static and dynamic elasticity
José Domínguez,Ramón Abascal +1 more
TL;DR: In this article, a unified formulation for obtaining fundamental solutions in elastostatics and steady state elasto-dynamics is presented for plane, three-dimensional and axisymmetric problems.
Journal ArticleDOI
Stabilization of time domain acoustic boundary element method for the exterior problem avoiding the nonuniqueness.
Hae-Won Jang,Jeong-Guon Ih +1 more
TL;DR: The time domain boundary element method to calculate the exterior sound field using the Kirchhoff integral has difficulties in non-uniqueness and exponential divergence, so a method to stabilize TBEM calculation for the exterior problem is suggested.
Journal ArticleDOI
On causality in dynamic response analysis by time-dependent boundary element methods
Heinz Antes,Otto von Estorff +1 more
TL;DR: In particular, des problemes de propagation d'ondes dans un milieu elastique (sol) avec une forme non convexe sont analyses as mentioned in this paper.
References
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Book
The Boundary Element Method for Engineers
TL;DR: This research attacked the mode confusion problem by developing a modeling framework to estimate the number of neurons in the response of the immune system to earthquake-related injuries.
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A mathematical introduction to fluid mechanics
TL;DR: In this paper, the Equations of Motion (EOM) and potential flow and slightly viscous flow are used to describe the gas flow in one dimension in one-dimensional space.
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Green's functions and boundary value problems
TL;DR: In this paper, the authors present a review of the main concepts of the theory of second-order differential operators and their application to nonlinear problems, such as boundary value problems for Equations of Order.