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以一个差分-微分方程导出了含有局部惯性项的三维浅海流体动力学流速分解模型的公式,将水平流速分解成4个分量——梯度流、风海流、线性惯性流和非线性惯性流.各流速分量的无因次垂向剖面采用变分-有限元方法求解,并单纯组成了风暴潮位的抛物型方程,从而使模拟计算类似于超浅海风暴潮所用的方法.最后,基于上述流速分解方法对渤海风潮作了数值研究,比较了各种效应的影响,得到了一些有意义的结果.
Based on a differential-differential equation, the formula of three-dimensional shallow ocean hydrodynamic decomposition model with local inertia is derived and the horizontal velocity is decomposed into four components-gradient flow, wind current, linear inertial flow and nonlinear inertial flow. The dimensionless vertical profile of the velocity component is solved by the variational-finite element method, and the parabolic equation of the storm tide level is simply composed so that the simulation calculation is similar to the method used in the super-shallow sea storm surge.Finally, based on the above- The Bohai Sea wave is numerically studied, and the effects of various effects are compared. Some meaningful results are obtained.