Generalized Finite Spectral Method for 1D Burgers and KdV Equations

ZHAN Jie-min; LI Yok-sheng

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ZHAN Jie-min, LI Yok-sheng. Generalized Finite Spectral Method for 1D Burgers and KdV Equations[J]. Applied Mathematics and Mechanics, 2006, 27(12): 1431-1438.

Citation:

ZHAN Jie-min, LI Yok-sheng. Generalized Finite Spectral Method for 1D Burgers and KdV Equations[J]. Applied Mathematics and Mechanics, 2006, 27(12): 1431-1438.

Citation:

ZHAN Jie-min, LI Yok-sheng. Generalized Finite Spectral Method for 1D Burgers and KdV Equations[J]. Applied Mathematics and Mechanics, 2006, 27(12): 1431-1438.

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Generalized Finite Spectral Method for 1D Burgers and KdV Equations

ZHAN Jie-min¹,
LI Yok-sheng²

1.
Department of Applied Mechanics and Engineering, Zhongshan University, Guangzhou 510275, P. R. China;

Received Date: 2005-05-15
Rev Recd Date: 2006-06-30
Publish Date: 2006-12-15

Abstract

Abstract

A generalized finite spectral method is proposed. The method is of high-order accuracy. To attain high accuracy in time discretization, the fourth-order Adams-Bashforth-Moulton predictor and corrector scheme was used. To avoid numerical oscillations caused by the dispersion term in the KdV equation, two numerical techniques were introduced to improve the numerical stability. The Legendre, Chebyshev and Hermite polynomials were used as the basis functions. The proposed numerical scheme is validated by applications to the Burgers equation (nonlinear convection-diffusion problem) and KdV equation(single solitary and 2-solitary wave problems), where analytical solutions are available for comparison. Numerical results agree very well with the corresponding analytical solutions in all cases.
- special orthogonal functions,
- generalized finite spectral method,
- nonlinear wave

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References(20)

References

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