Time-Spectral Solution of Initial-Value Problems—Subdomain Approach

Abstract

Temporal and spatial subdomain techniques are proposed for a time-spectral method for solution of initial-value problems. The spectral method, called the generalised weighted residual method (GWRM), is a generalisation of weighted residual methods to the time and parameter domains [1]. A semi-analytical Chebyshev polynomial ansatz is employed, and the problem reduces to determine the coefficients of the ansatz from linear or nonlinear algebraic systems of equations. In order to avoid large memory storage and computational cost, it is preferable to subdivide the temporal and spatial domains into subdomains. Methods and examples of this article demonstrate how this can be achieved.

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J. Scheffel and A. Mirza, "Time-Spectral Solution of Initial-Value Problems—Subdomain Approach," American Journal of Computational Mathematics, Vol. 2 No. 2, 2012, pp. 72-81. doi: 10.4236/ajcm.2012.22010.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1] J. Scheffel, “A Spectral Method in Time for Initial-Value Problems”, American Journal of Computational Mathe- matics, 2012.
[2] J. C. Mason and D. C. Handscomb, “Chebyshev Polynomials”, Chapman and Hall/CRC, New York, 2003.
[3] R. Peyret, “Spectral Methods for Incompressible Viscous Flow,” Springer-Verlag, Berlin, 2002.
[4] C. Canuto, M. Y. Hussaini, A. Quarteroni and T. A. Zang, “Spectral Methods, Evolution to Complex Geometries and Applications to Fluid Dynamics”, Springer-Verlag, Berlin, 2007.
[5] J. Scheffel and C. H?kansson, “Solution of Systems of Non-Linear Equations—A Semi-Implicit Approach”, Applied Numerical Mathematics, Vol. 59, No. 10, 2009, pp. 2430-2443. doi:10.1016/j.apnum.2009.05.002
[6] W. H. Press, S. A. Teukolsky, W. T. Vetterling and B. P. Flannery, “Numerical Recipes,” Cambridge University Press, Cambridge, 1992.
[7] J. Wesson, “Tokamaks”, second edition. Clarendon Press, Oxford, 1997.

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