Results 31 to 40 of about 368,669 (336)

Continuous operator method application for direct and inverse scattering problems

open access: yesЖурнал Средневолжского математического общества, 2021
We describe the continuous operator method for solution nonlinear operator equations and discuss its application for investigating direct and inverse scattering problems.
Boykov Ilya V.   +3 more
doaj   +1 more source

Exact analytical helmholtz bright and dark solitons [PDF]

open access: yes, 2004
In this paper, exact analytical Helmholtz bright and dark soliton solutions for a Kerr nonlinearity are presented. Numerical simulations verify that these solutions are both robust and act as attractors in nonlinear beam dynamics.
Chamorro-Posada, P, McDonald, GS
core   +2 more sources

Experimental and numerical investigation of Helmholtz resonators and perforated liners as attenuation devices in industrial gas turbine combustors [PDF]

open access: yes, 2014
This paper reports upon developments in the simulation of the passive control of combustion dynamics in industrial gas turbines using acoustic attenuation devices such as Helmholtz resonators and perforated liners.
Houston, B.   +6 more
core   +1 more source

New Laplace and Helmholtz solvers [PDF]

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2019
Numerical algorithms based on rational functions are introduced that solve the Laplace and Helmholtz equations on 2D domains with corners quickly and accurately, despite the corner singularities.
A. Gopal, L. Trefethen
semanticscholar   +1 more source

Adaptive BEM with optimal convergence rates for the Helmholtz equation [PDF]

open access: yes, 2018
We analyze an adaptive boundary element method for the weakly-singular and hypersingular integral equations for the 2D and 3D Helmholtz problem. The proposed adaptive algorithm is steered by a residual error estimator and does not rely on any a priori ...
Bespalov, Alex   +3 more
core   +3 more sources

Broadband low-frequency sound transmission loss improvement of double walls with Helmholtz resonators

open access: yesJournal of Sound and Vibration, 2020
Helmholtz resonators are commonly used as narrowband sound absorbers in room acoustics applications. Previous research has shown that Helmholtz resonators can also be used to improve the sound transmission loss of double walls. The focus of this paper is
F. Langfeldt, H. Hoppen, W. Gleine
semanticscholar   +1 more source

Kelvin-Helmholtz Vortices as an Interplay of Magnetosphere-Ionosphere Coupling

open access: yesFrontiers in Astronomy and Space Sciences, 2022
The solar wind-magnetosphere interaction drives diverse physical processes on the flanks of Earth’s magnetopause, and in turn these processes couple to the ionosphere.
K.-J. Hwang   +13 more
doaj   +1 more source

Helmholtz [PDF]

open access: yesDie Naturwissenschaften, 1921
n ...
openaire   +2 more sources

Binocular Helmholtz stereopsis [PDF]

open access: yesProceedings Ninth IEEE International Conference on Computer Vision, 2003
Helmholtz stereopsis has been introduced recently as a surface reconstruction technique that does not assume a model of surface reflectance. In the reported formulation, correspondence was established using a rank constraint, necessitating at least three viewpoints and three pairs of images.
Todd E. Zickler   +4 more
openaire   +1 more source

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