Results 231 to 240 of about 1,299,133 (276)

Efficient Prediction of Multicomponent Adsorption Isotherms and Enthalpies of Adsorption in MOFs Using Classical Density Functional Theory. [PDF]

open access: yesJ Phys Chem B
Thiele N   +10 more
europepmc   +1 more source

Lattice Sums for the Helmholtz Equation

SIAM Review, 2010
A survey of different representations for lattice sums for the Helmholtz equation is made. These sums arise naturally when dealing with wave scattering by periodic structures. One of the main objectives is to show how the various forms depend on the dimension $d$ of the underlying space and the lattice dimension $d_\Lambda$. Lattice sums are related to,
C M Linton
exaly   +3 more sources

Layer Stripping for the Helmholtz Equation

SIAM Journal on Applied Mathematics, 1996
Summary: We develop a new layer stripping technique for the inverse scattering problem for the one-dimensional Helmholtz equation on the half line. The technique eliminates the use of ``trace formulas'', relying instead on a nonlinear Plancherel equality that provides a simple and precise characterization of the reflection data.
John Sylvester 0002   +2 more
openaire   +3 more sources

The Topological Asymptotic for the Helmholtz Equation

SIAM Journal on Control and Optimization, 2003
Summary: The aim of the topological sensitivity analysis is to obtain an asymptotic expansion of a functional with respect to the creation of a small hole in the domain. In this paper such an expansion is obtained for the Helmholtz equation with a Dirichlet condition on the boundary of a circular hole.
Bessem Samet   +2 more
openaire   +2 more sources

Symmetry Problems for the Helmholtz Equation

Applied Mathematics Letters, 2019
Abstract Let D be a bounded domain in R 2 with a smooth boundary S , N be the unit normal to S pointing out of D , k > 0 is a constant. The class of over-determined problems of the type: ∇ 2 u + k 2 u = c 0 i n D , u | S = c 1 , u N
openaire   +2 more sources

The Helmholtz Equation

2010
The Helmholtz equation $$(\Delta + k^2)w(x) = 0$$ (7.1) arises naturally in physical applications related to wave propagation and vibration phenomena. We mention several important examples.
Goong Chen, Goong Chen, Jianxin Zhou
openaire   +1 more source

The Helmholtz Equation

2001
The acoustic wave equation described the propagation of the sound in a medium like the air. It results, e.g., from the equation of the compressible gas dynamic, also called the compressible Navier-Stokes equations. In the case of small displacements of the gas, a linearization of these equations leads to an equation for the displacement and the small ...
openaire   +1 more source

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