An Ocean Model Using the Cut-Cell Method and Its Applications

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  • Oikawa Masamichi
    九州大学大学院総合理工学府大気海洋環境システム学専攻博士課程
  • Kyozuka Yusaku
    九州大学大学院総合理工学研究院

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Other Title
  • カットセル法を用いた海洋モデルとその応用
  • カットセルホウ オ モチイタ カイヨウ モデル ト ソノ オウヨウ

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Description

An ocean model using "cut-cell method" has been developed to simulate the flow field around three-dimensional complicated topography via the modification of the MEC model, an ordinary Cartesian coordinate model. In the developed model, the finite volume method is employed for the accuracy of mass- and momentum-conservations. As an application, the developed model is applied for the analysis of the tidal flow of a bay connected with the ocean by a very narrow and oblique channel. Although results by the original MEC model strongly depend on the direction of the channel, the results by the developed model show good agreement with theoretical values. Then, the developed model is applied for the analysis of the flow around a tall seamount in steady background currents. Those results are discussed in comparison with the results by the original MEC model.

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