保存領域法による潮汐の数値解析-1-水平2次元問題

概要

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The explicit method named conservative region method is proposed for the horizontal twodimensional tidal flow problems. The method is formulated by considering the conservations ofthe water mass and the momentum for some special subdomain instead of starting from thegoverning equations and without using the weighted residual method.The triangular and the quadrilateral element cases are formulated and are applied to arectangular model basin with constant depth. The results are almost the same in both cases.The numerical results of the tidal residual flow are compared with Yasuda's analyticsolutions. There are little differences between their shapes except in the neighbourhood of theopen boundary, but the absolute values of the numerical results are about twice as large as theanalytic ones. The differences between them might be due to(i) the artificial boundary condition at the open boundary,(ii) a little rough division of the rectangular model basin and(iii) the ignorance of the nonlinear interaction of the tidal residual flow in the analyticsolutions.
鹿児島大学の論文
1986-12-00