Results 231 to 240 of about 60,674 (269)

Numerical investigation of the Friedrichs mdoel dispersion relation

Journal of Computational Physics, 1974
Abstract The numerical procedure of Marchand and a zero searching routine are applied to the study of the zero trajectories of the complex transcendental equation ω 0 − z − λ 2 ∫ 1 0 o(ω) ω − z dω − 2πiλ 2 o(z) = 0, where φ(ω) belongs to a class of fourth degree polynomials.
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Full frequency dispersive numerical modeling of Tsunamis

2011
A numerical model based on the mild slope equation is applied to reproduce the propagation of small amplitude transient waves over mildly sloped sea bed. The model is suitable to reproduce the tsunami far field propagation. In the present research the waves are generated by a forcing term included in the mild slope equation that represents the effects ...
Franco, L., Cecioni, C., Bellotti, G., DI RISIO, MARCELLO, De Girolamo, P., Sammarco, P.   +5 more
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Numerical stability and numerical dispersion of a compact 2-D/FDTD method used for the dispersion analysis of waveguides

IEEE Microwave and Guided Wave Letters, 1993
The stability condition is derived for the compact two-dimensional finite-difference-time-domain (2-D/FDTD) scheme which was recently proposed for the dispersion analysis of waveguiding structures. It is shown that the upper limit of the Courant number depends on the desirable propagation constant beta and is always smaller than the one for the ...
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Numerical Aspects of Convection-Dispersion Equation

Proceedings, 2011
Virtually all reservoir simulators obtain solutions to fluid flow equations, usually nonlinear partialdifferential equations, by making discrete approximations to derivatives. Whether finite‐difference or finite‐element methods are used, these approximations always introduce truncation errors that often can distort the accuracy and stability of the ...
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Frequency Domain Numerical Dispersion Mitigation Network

2023
Kirill Gadylshin, Vadim V. Lisitsa, Kseniia Gadylshina, Dmitry M. Vishnevsky   +3 more
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Numerical experiments on dispersion in he¬terogeneous porous media

1990
The paper discusses numerical simulations of dispersion processes of inert solutes in two-dimensional random log-permeability fields Y(x). A suitable number of realizations is generated preserving a given spatial correlation structure. For each realization a finite element model solves the flow equation and a particle-tracking method solves the ...
SALANDIN, PAOLO, RINALDO, ANDREA
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Numerical Study of Aerosol Dispersion in the Aircraft Cabin

2023
Shishkin, Andrey, Schiepel, Daniel, Schmeling, Daniel   +2 more
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A numerical dispersion-dissipation analysis of discontinuous Galerkin methods based on quadrilateral and triangular elements

Geophysics, 2020
Dinghui Yang, Xiao Ma, XiJun He
exaly  

Numerical simulation of poly-dispersed systems

2008
Multi-size equations of Iddir and Arastoopour [2005] incorporated in the MFIX code were used to predict particle segregation and annular flow of particles in a riser section of a PSRI CFB. However, the multi-size approach requires a considerable amount of computational time when several particulate phases are considered.
STRUMENDO, MATTEO, Arastoopour H., Ahmadzadeh A.   +2 more
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Numerical dispersion and dissipation

2011
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