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A Semi-implicit spectral method for the anelastic equations

✍ Scribed by Scott R. Fulton

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
579 KB
Volume
106
Category
Article
ISSN
0021-9991

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✦ Synopsis

This paper describes the efficient and accurate solution of the twodimensional anelastic equations by a Fourier-Chebyshev spectral method. A fourth-order Runge-Kutta method is used for th6 time integration, with the diffusion terms treated implicitly and all other terms (including the pressure gradient) treated explicitly. The model is free from aliasing and converges quickly once the solution is resolved. Numerical results are given for nonlinear flow generated by an atmospheric density current.

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