理論応用力学講演会 講演論文集
第64回理論応用力学講演会
セッションID: OS4-02-01
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OS4-2 大気・海洋・惑星の流体力学(2)
球面螺旋上に節点を準一様配置した浅水波モデル
榎本 剛
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Quasi-uniform nodes are easily generated with a spherical helix without optimizations. A shallow water model has been constructed that utilizes the excellent properties of the spherical helix using the RBF (radial basis function) method and has been evaluated with the standard test cases. The model is indeed spectral (third-order) in the advection of a Gaussian (cosine) bell over the poles (case 1). In the steady state non-linear geostrophic flows (case 2 and 3), the models with minimum energy and spherical helix nodes result in comparable accuracies.

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