Zobrazeno 1 - 10
of 803
pro vyhledávání: '"CHAPPELL, DAVID A."'
Ray flow methods provide efficient tools for modelling wave energy transport in complex systems at high-frequencies. We compare two Petrov-Galerkin discretizations of a phase-space boundary integral model for stationary wave energy densities in two-d
Externí odkaz:
http://arxiv.org/abs/2309.17120
Autor:
Chappell, David J.
Publikováno v:
In Journal of Computational Physics 15 October 2024 515
Ray flow methods are an efficient tool to estimate vibro-acoustic or electromagnetic energy transport in complex domains at high-frequencies. Here, a Petrov-Galerkin discretization of a phase-space boundary integral equation for transporting wave ene
Externí odkaz:
http://arxiv.org/abs/2106.14506
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
Sondergaard, Niels, Chappell, David
Publikováno v:
Journal of Sound and Vibration, Vol. 377, 155-168, 2016
We propose wave and ray approaches for modelling mid- and high- frequency structural vibrations through smoothed joints on thin shell cylindrical ridges. The models both emerge from a simplified classical shell theory setting. The ray model is analys
Externí odkaz:
http://arxiv.org/abs/1608.04623
Discrete flow mapping was recently introduced as an efficient ray based method determining wave energy distributions in complex built up structures. Wave energy densities are transported along ray trajectories through polygonal mesh elements using a
Externí odkaz:
http://arxiv.org/abs/1608.04607
Autor:
Abusag, Nadia M., Chappell, David J.
The method of superposition is proposed in combination with a sparse $\ell_1$ optimisation algorithm with the aim of finding a sparse basis to accurately reconstruct the structural vibrations of a radiating object from a set of acoustic pressure valu
Externí odkaz:
http://arxiv.org/abs/1601.04863
Autor:
Chappell, David J.
We consider a class of potential problems on a periodic half-space for the modelling of electrified oil films, which are used in the development of novel switchable liquid optical devices (diffraction gratings). A boundary integral formulation which
Externí odkaz:
http://arxiv.org/abs/1409.4608