Results 21 to 30 of about 1,386,269 (179)

Complete centered finite difference method for Helmholtz equation [PDF]

open access: yesAnais da Academia Brasileira de Ciências
A new approach in the finite difference framework is developed, which consists of three steps: choosing the dimension of the local approximation subspace, constructing a vector basis for this subspace, and determining the coefficients of the linear ...
GUSTAVO B. ALVAREZ   +2 more
doaj   +1 more source

Room Acoustic Simulation Using Finite Difference Time Domain Method [PDF]

open access: yesمجله مدل سازی در مهندسی, 2015
The growing use of industrial machinery, household appliances and etc, has increased undesirable noises. Thus, the need to control and reduce the undesirable noises in a closed space has caused a lot of interest in recent years.
mahdi nili ahmad abadi   +2 more
doaj   +1 more source

Efficient interface conditions for the finite difference beam propagation method [PDF]

open access: yes, 1992
It is shown that by adapting the refractive indexes in the vicinity of interfaces, the 2-D beam propagation method based on the finite-difference (FDBPM) scheme can be made much more effective. This holds especially for TM modes propagating in structures
Hoekstra, H.J.W.M.   +2 more
core   +3 more sources

Comparison Study on the Performances of Finite Volume Method and Finite Difference Method

open access: yesJournal of Applied Mathematics, 2013
Vorticity-stream function method and MAC algorithm are adopted to systemically compare the finite volume method (FVM) and finite difference method (FDM) in this paper.
Renwei Liu   +4 more
doaj   +1 more source

Investigation of calculation techniques of finite difference method

open access: yesMokslas: Lietuvos Ateitis, 2010
Finite difference method used for microstrip transmission line analysis is considered in this article. Paper mainly deals with iterative and bound matrix calculation techniques of finite difference method.
Audrius Krukonis
doaj   +1 more source

Existence and uniqueness of an inverse problem for a second order hyperbolic equation

open access: yesUniversal Journal of Mathematics and Applications, 2018
In this paper, an initial boundary value problem for a second order hyperbolic equation is considered. Giving an additional condition, a time-dependent coefficient multiplying a linear term is determined and existence and uniqueness theorem for small ...
İbrahim Tekin
doaj   +1 more source

Finite Difference Method for the Multi-Asset Black–Scholes Equations

open access: yesMathematics, 2020
In this paper, we briefly review the finite difference method (FDM) for the Black−Scholes (BS) equations for pricing derivative securities and provide the MATLAB codes in the Appendix for the one-, two-, and three-dimensional numerical ...
Sangkwon Kim   +3 more
doaj   +1 more source

Hybrid Spectral Difference/Embedded Finite Volume Method for Conservation Laws [PDF]

open access: yes, 2015
A novel hybrid spectral difference/embedded finite volume method is introduced in order to apply a discontinuous high-order method for large scale engineering applications involving discontinuities in the flows with complex geometries.
Choi, Jung J.
core   +1 more source

The Finite Difference Method Of Discontinuous Constraint Slabs

open access: yesMATEC Web of Conferences, 2016
With the improvement of building standard, structural form becomes more and more complicated. The utility rate of special-shaped column, corner window and cantilever structure is higher and higher, which often makes reinforced concrete floor slabs in a ...
Wang J.C.   +3 more
doaj   +1 more source

Modeling and simulation sedimentation process using finite difference method

open access: yesJournal of the Mechanical Behavior of Materials, 2022
The goal of this research is to develop a numerical model that can be used to simulate the sedimentation process under two scenarios: first, the flocculation unit is on duty, and second, the flocculation unit is out of commission. The general equation of
Naser Mohammed Abed   +1 more
doaj   +1 more source

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