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Pseudospectral method

A multidomain approach of the Fourier pseudospectral method using discontinuous grid for elastic wave modeling

A multidomain approach of the Fourier pseudospectral method using discontinuous grid for elastic wave modeling

... the pseudospectral method in accuracy and efficiency, and the drawbacks caused by the coarse grid spacing in the conven- tional uniform grids are removed, so that the very low veloc- ity region in the model ...

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Optimal Tracking Control of an Underactuated Container Ship Based on Direct Gauss Pseudospectral Method

Optimal Tracking Control of an Underactuated Container Ship Based on Direct Gauss Pseudospectral Method

... direct method, known as the Gauss Pseudospectral Method (GPM), to transform the optimal control problem into an NLP by parameterization of the states and the ...proposed method is suitable for ...

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An efficient approach of the pseudospectral method for modelling of geometrically symmetric seismic wavefield

An efficient approach of the pseudospectral method for modelling of geometrically symmetric seismic wavefield

... The pseudospectral method is a high-accuracy numerical modelling technique that requires less computer mem- ory and computation time than the traditional techniques such as the finite-difference ...the ...

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A new exponential Jacobi pseudospectral method for solving high order ordinary differential equations

A new exponential Jacobi pseudospectral method for solving high order ordinary differential equations

... Jacobi pseudospectral method in conjunction with the operational matrix of differentiation of exponential Jacobi functions to obtain numerical solutions of high-order ordinary differential equations on a ...

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A fourier pseudospectral method for some computational aeroacoustics problems

A fourier pseudospectral method for some computational aeroacoustics problems

... Fourier pseudospectral time domain method, if a buffer zone is not applied, wave rewraping will contaminate the ...the pseudospectral method is actually more exact than the compact ...Fourier ...

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Numerical analysis via Chebyshev pseudospectral method for nonlinear initial/boundary value problems

Numerical analysis via Chebyshev pseudospectral method for nonlinear initial/boundary value problems

... Chebyshev pseudospectral method. This method is applied in the current paper to solve some nonlinear initial and boundary value problems of particular interest in applied sciences and ...present ...

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A second order Fourier pseudospectral method for the generalized regularized long wave equation

A second order Fourier pseudospectral method for the generalized regularized long wave equation

... and pseudospectral methods have been developed rapidly in the past two ...tion method for Navier-Stokes equations by Guo and Zou [], fully discrete (discrete both in space and time) pseudospectral ...

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Solving the Transient Cost Related Optimization Problem for Copper Flash Smelting Process with Legendre Pseudospectral Method

Solving the Transient Cost Related Optimization Problem for Copper Flash Smelting Process with Legendre Pseudospectral Method

... In the present contribution, a scheme to solve transient cost-related optimization problem of dynamic transient procedure for copper fl ash smelting process is investigated. Taking the actual copper fl ash smelting process ...

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Solving Variable Coefficient Korteweg-de Vries Equation Using Pseudospectral Method

Solving Variable Coefficient Korteweg-de Vries Equation Using Pseudospectral Method

... in pseudospectral methods the interpolation technique because of the DFT, which allows to transform quickly from the set of function values in grid points to the set of its interpolation ...

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Differentiation operation in the wave equation for the pseudospectral method with a staggered mesh

Differentiation operation in the wave equation for the pseudospectral method with a staggered mesh

... PS method of the seismic wave propagation in the present ...differentiation method is one third faster than that by using the traditional complex FFT in the staggered meshed ...PS method is ...

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The Lanczos Chebyshev Pseudospectral Method for Solution of Differential Equations

The Lanczos Chebyshev Pseudospectral Method for Solution of Differential Equations

... accuracy, pseudospectral formulations employ orthogonal-polynomial ...classical pseudospectral methods, the series expansions are often replaced by function values at the collo- cation points in the ...

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Gauss Pseudospectral Method Based Trajectory Optimization for Hypersonic Glide Vehicles

Gauss Pseudospectral Method Based Trajectory Optimization for Hypersonic Glide Vehicles

... direct method and indirect method. Direct method can be further divided into direct shooting method and collocation ...indirect method is usually difficult to meet the optimization ...

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Fourier Pseudospectral Solution for a 2D Nonlinear Paraxial Envelope Equation of Laser Interactions in Plasmas

Fourier Pseudospectral Solution for a 2D Nonlinear Paraxial Envelope Equation of Laser Interactions in Plasmas

... Fourier pseudospectral method has been verified as an accurate and effective technique for solving the envelope-equation in nonlinear optics [15], soliton physics [16], Bose-Einstein condensates [17], and ...

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Symplectic Pseudospectral Time-Domain Scheme for Solving Time-Dependent Schrodinger Equation

Symplectic Pseudospectral Time-Domain Scheme for Solving Time-Dependent Schrodinger Equation

... FDTD method [2, 3]. In FDTD method, spatial derivatives in Schr¨ odinger equation are approximated by finite ...called pseudospectral method. The pseudospectral method has an ...

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An accurate Chebyshev pseudospectral scheme for multi-dimensional parabolic problems with time delays

An accurate Chebyshev pseudospectral scheme for multi-dimensional parabolic problems with time delays

... Chebyshev pseudospectral method for spatial discretizations for the initial-boundary value problems with time delays in one and two ...This method is known for its ease in implementation along with ...

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Pseudospectral Optimal Control of Active Magnetic Bearing Systems

Pseudospectral Optimal Control of Active Magnetic Bearing Systems

... Gauss pseudospectral method is presented in its most current form and provides a complete NLP, which includes both inequality constraints and dif- ferential equations in the optimal control problem ...

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An improved pseudospectral approximation of generalized Burger-Huxley and Fitzhugh-Nagumo equations

An improved pseudospectral approximation of generalized Burger-Huxley and Fitzhugh-Nagumo equations

... time-space pseudospectral method for numerical solution of generalized Burger-Huxley and time dependent Fitzhugh-Nagumo ...the method has shown using numerical examples and studied various ...

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Combining Pseudospectral Discretization with Method of Lines in Full-Wave Analysis of Cylindrical Microstrip

Combining Pseudospectral Discretization with Method of Lines in Full-Wave Analysis of Cylindrical Microstrip

... for pseudospectral-based method of lines is highly improved ...for pseudospectral method to treat irregular domain can also be partly avoided if it is combined with method of ...the ...

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Erosion Potential Method (Gavrilović method) sensitivity analysis

Erosion Potential Method (Gavrilović method) sensitivity analysis

... Gavrilović method (Erosion Potential Meth- od, EPM) is an empirical, semi-quantitative model (Gavrilović ...The method was based on erosion field research in the Morava River catchment area in Serbia and ...

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Method Development and Validation of Efavirenz by RP-HPLC Method

Method Development and Validation of Efavirenz by RP-HPLC Method

... selected after scanning the standard solution of drug over 200 to 400nm. From the U.V spectrum of Efavirenz it is evident that most of the HPLC work can be accomplished in the wavelength range of 240-320 nm conveniently. ...

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