【摘要】 有限体积法是求解流体问题的一个非常有效的数值方法,本文研究非正交网格有限体积法在三维潮流场数值模拟中的应用。由三维浅水方程出发,利用有限体积法的积分模式并引入Green-Gauss公式,将控制体单元的体积分转化为面积分,采用一种任意六面体单元,垂直涡动粘性系数定义为水深的函数。使之能适应复杂海域和地形,又可获得不同水深的计算数据。用本文方法对辽东湾海区流场进行了数值模拟,并获得理想的结果。更多还原

【Abstract】 Finite Volume Method (FVM) is used to solve 3-D tide flow as an efficient numerical method for fluid problems in this paper. The controliling equations in integrated mode are deduced from N-S equation. Gauss theorem is used to transfer volume integration of unregular cubic element to area integration. Vertical viscosity coefficient is defined as a function of depth in the calculation of Liaodong Bay tide flow structure. Through the practice FVM appears obvious advantages in conservation, adaptability to complex geometrical boundary and simple program.更多还原