Results 61 to 70 of about 63,527 (207)

Wave instability on the interface coating/substrate material under heterogeneous plasma flows

Journal of Materials Research and Technology, 2020
The paper reports on an undulating topography initiating on the interface “coating/base material” under heterogeneous plasma flows to be generated by an explosion of yttrium powder on the aluminum-silicon base. We assumed that an undulating topography on
Sergey Nevskii, Vladimir Sarychev, Sergey Konovalov, Alexey Granovskii, Viktor Gromov   +4 more
doaj   +1 more source

Potential-density pairs for axisymmetric galaxies: the influence of scalar fields

, 2005
We present a formulation for potential-density pairs to describe axisymmetric galaxies in the Newtonian limit of scalar-tensor theories of gravity.
A. Aguirre, A.G. Riess, A.G. Riess, B. Boisseau, C.L. Bennett, D. Jackson, D.H. Eckhardt, E. Fischbach, E. M. De la Calleja, E.W. Kolb, G. Efstathiou, J. Binney, J. F. Tlapanco, J.P. Ostriker, Jorge L. Cervantes-Cota, L. Amendola, M. A. Rodríguez-Meza, M. I. Pedraza, M.A. Rodríguez-Meza, M.B. Green, P. de Bernardis, R.H. Sanders, R.R. Caldwell, S. Perlmutter, T. Helbig, T. Matos, Y. Fujii, Y. Fujii   +27 more
core   +1 more source

Method of lines transpose: High order L-stable O(N) schemes for parabolic equations using successive convolution [PDF]

, 2016
We present a new solver for nonlinear parabolic problems that is L-stable and achieves high order accuracy in space and time. The solver is built by first constructing a single-dimensional heat equation solver that uses fast O(N) convolution.
Causley, Matthew F., Cho, Hana, Christlieb, Andrew J., Seal, David C.   +3 more
core   +3 more sources

Metric deformation and boundary value problems in 2D

, 2012
A new analytical formulation is prescribed to solve the Helmholtz equation in 2D with arbitrary boundary. A suitable diffeomorphism is used to annul the asymmetries in the boundary by mapping it into an equivalent circle.
Khastgir, S Pratik, Panda, Subhasis, Sarkar, Tapomoy Guha   +2 more
core   +1 more source

Modified Van der Pol-Helmholtz oscillator equation with exact harmonic solutions [PDF]

, 2022
Abdou Raimi Olagnika AKPLOGAN, K. K. D. Adjaï, J. Akande, Gabriel Y. H. Avossevou, M. D. Monsia   +4 more
openalex   +1 more source

DBEM solutions to modified Helmholtz problems for FGMs of space–time-dependent properties

Results in Physics
A combined Laplace transform (LT) and domain-boundary element method (DBEM) are utilized to obtain numerical solutions for a spatio-temporal coefficient modified Helmholtz-type equation with arbitrary initial conditions and source terms, addressing ...
Mohammad Ivan Azis
doaj   +1 more source

Landweber iterative regularization method for identifying the unknown source of the modified Helmholtz equation

Boundary Value Problems, 2017
In this paper, we consider the inverse problem of identifying the unknown source for the modified Helmholtz equation. We propose the Landweber iterative regularization method to solve this problem and obtain the regularization solution.
Fan Yang, Xiao Liu, Xiao-Xiao Li
doaj   +1 more source

Inverse mean value property of solutions to the modified Helmholtz equation

St. Petersburg Mathematical Journal, 2022
A theorem characterizing balls in the Euclidean space R m \mathbb {R}^m analytically is proved. For this purpose, positive solutions of the modified Helmholtz equation are applied instead of harmonic functions used in previous results.
openaire   +3 more sources

An Analysis of Infiltration in Furrow Irrigation Channels With Root Water Uptake

Journal of Applied Mathematics
This study discusses infiltration in six irrigation channel types with root water uptake in four types of roots. The mathematical model for the infiltration problem is the Richards equation.
Suma Inna, Muhammad Manaqib, Vika Dwi Samudra, Ruly Erhandi   +3 more
doaj   +1 more source

A Novel Meshfree Approach with a Radial Polynomial for Solving Nonhomogeneous Partial Differential Equations

Mathematics, 2020
In this article, a novel radial−based meshfree approach for solving nonhomogeneous partial differential equations is proposed. Stemming from the radial basis function collocation method, the novel meshfree approach is formulated by incorporating ...
Cheng-Yu Ku, Jing-En Xiao, Chih-Yu Liu
doaj   +1 more source