A344 地球シミュレータ用・非静力学海洋モデルのためのポアソンソルバーの開発(A-34 大気の流れ(4),一般講演)

概要

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We have been developing a non-hydrostatic coupled ocean-atmosphere simulation code that can treat explicitly not only large scale phenomenon such as global general circulations but convections. We focus on the ocean component of this coupled simulation code in this report, especially efficient schemes for solving Poisson equations. We divided pressure terms into hydrostatic and non-hydrostatic pressure terms. In this implementation, it is essential to solve 2-dimensional Poisson equations with high performance, because our simulations will be performed with high resolution. We evaluate the introduced schemes, some Krylov subspace methods, from the view points of wall clock time and the number of iterations on the Earth Simulator. Moreover we will discuss the characteristics of the coefficient matrix on the overset grid called the Yin-Yang grid.
日本流体力学会の論文
2004-08-09