Results 81 to 90 of about 571 (177)

A pseudospectral quadrature method for Navier-Stokes equations on rotating spheres

, 2011
In this work, we describe, analyze, and implement a pseudospectral quadrature method for a global computer modeling of the incompressible surface Navier-Stokes equations on the rotating unit sphere.
Le Gia, QT, Ganesh, M, Sloan, IH
core   +1 more source

The eigenvalues of the pseudospectral Fourier approximation to the operator sin (2x) d/dx

, 1985
It is shown that the eigenvalues Z sub i of the pseudospectral Fourier approximation to the operator sin(2x) curly d/curly dx satisfy (R sub e) (Z sub i) = + or - 1 or (R sub e)(Z sub I) = 0.
Tal-Ezer, H.
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Fourier-Gegenbauer Pseudospectral Method for Solving Time-Dependent One-Dimensional Fractional Partial Differential Equations with Variable Coefficients and Periodic Solutions

, 2023
In this paper, we present a novel pseudospectral (PS) method for solving a new class of initial-value problems (IVPs) of time-dependent one-dimensional fractional partial differential equations (FPDEs) with variable coefficients and periodic solutions. A
Elgindy, Kareem T.
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A solver based on pseudo-spectral analytical time-domain method for the two-fluid plasma model. [PDF]

Sci Rep, 2021
Morel B, Giust R, Ardaneh K, Courvoisier F.   +3 more
europepmc   +1 more source

Learning PDE to Model Self-Organization of Matter. [PDF]

Entropy (Basel), 2022
Brandao E, Colombier JP, Duffner S, Emonet R, Garrelie F, Habrard A, Jacquenet F, Nakhoul A, Sebban M.   +8 more
europepmc   +1 more source

Nonstandard Fourier Pseudospectral Time Domain (PSTD) Schemes for Partial Differential Equations [PDF]

, 2018
A class of nonstandard pseudospectral time domain (PSTD) schemes for solving time-dependent hyperbolic and parabolic partial differential equations (PDEs) is introduced.
Wise, ES, Cox, BT, Treeby, BE
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A Pseudospectral Chebychev method for the 2D Wave Equation with Domain Stretching and Absorbing Boundary Conditions

, 1995
In this paper we develop a method for the simulation of wave propagation on artificially bounded domains. The acoustic wave equation is solved at all points away from the boundaries by a pseudospectral Chebychev method.
Rosemary Renaut, Jochen Fröhlich
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Pricing Options under Heston’s Stochastic Volatility Model via Accelerated Explicit Finite Differencing Methods [PDF]

We present an acceleration technique, effective for explicit finite difference schemes describing diffusive processes with nearly symmetric operators, called Super-Time-Stepping (STS).
Conall O'Sullivan, Stephen O'Sullivan
core  

Pseudospectral methods for a class of evolutionary systems

, 2013
Includes illustrations (some color).Includes bibliographical references (pages 71-72).Mathematical and computer modeling of various physical processes typically involve evolutionary systems which are a class of time dependent partial differential ...
Geldhof, Sam
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The Multidomain Pseudospectral Frequency-domain Method and Its Application in Modeling of Photonic Structures

, 2007
傳統的頻域演算法或多或少存在有收斂性和效率方面的問題; 為了克服這些困擾, 本篇論文提出一種稱為多區域假譜頻域法的替代方案。 其優越的 "譜準度" 特性大大降低了對於離散化密度的要求, 而多區域法能夠良好地接合不同的材料。透過一些實際範例的實作, 這種方法用於光電結構模擬與設計的實用性及潛力得到了驗證。Conventional frequency-domain algorithms suffer more or less from convergence and ...
Shih, Nai-Yuan, 施乃元
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