一种纯隐格式在近海潮流数值模拟中的应用

为分析纯隐格式的混合有限分析法在工程实际应用中的可行性,文章采用二维近海区域浅水数学模型,应用fortran语言和该数值离散方法编写了二维潮流场数值模拟程序,并将冻结法与ADI数值模式中的干-湿网格判别标准结合起来有效地处理了计算区域的浅滩。选取湛江湾为例,对其潮流场进行了数值模拟计算,通过与已有的潮位及流速测站的实际测量值进行比较分析,显示采用的数学模型及混合有限分析离散方法能准确有效地模拟实际流态,效果较好,结果准确可信,显示该隐格式方法值得在工程实际应用中推广。

Application of a pure implicit scheme in numerical simulation of coastal tide

Programs for simulating coastal flowing were developed by applying two-dimensional shallow water mathematical model and hybrid finite analytic method for feasibility analysis of using the pure implicit scheme in engineering.The method of freezing and standard of distinguishing dry-flood grids are used together to deal with beach existing in computational area.Flowing in Zhanjiang bay was simulated and numerical results were compared and analyzed with those measured.It shows the mathematical model and pure implicit scheme used can simulate real flowing exactly.Scale of efficiency and cost is acceptable and results are believable.It′s worth extending the pure implicit scheme to application in real engineering.