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Numerical Simulation for the Advection Equation on the Sphere by Sphere-Lagrangian Method  

Yoon Seong Y. (영남대학교 기계공학과)
Publication Information
Journal of computational fluids engineering / v.9, no.3, 2004 , pp. 8-17 More about this Journal
Abstract
A Semi-Lagrangian method based on CIP(Cubic Interpolated Pseudoparticle)method is proposed and it is applied to solve the two dimensional advection equation. Especially the attentions are given to settle the pole problem and to enhance the accuracy in solving the advection equation on the spherical coordinate system. Tn this algorithm, the CU method is employed as the Semi-Lagrangian method and extended to the spherical coordinate system. To enhance the accuracy of the solution, the spatial discretization is made by CIP method. The mathematical formulation and numerical results are also described. To verify the efficiency, accuracy and capability of proposed algorithm, two dimensional rotating cosine bell problem and the frontogenesis problem are simulated by the present scheme. As results, it is confirmed that the present scheme gives an accurate solution and settles the pole problem in the advection equation on the sphere.
Keywords
CIP Method; Advection Equation; Semi-Lagrangian Method; Cosine bell; frontogenesis.;
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