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“海流数值预报”系国家“七五”攻关项目第76项“海洋环境数值预报研究”的核心课题。本成果从关于海水动量、水量和热量平衡原理及关于海水密度和温度、盐度、压力之间的关系的七个偏微分方程出发,通过量级分析对方程进行了简化,建立了适应业务预报的物理模式,然后对偏微分方程进行了离散化,导出了适应计算机运算的有限差分方程。同时研究了边界和初始条件,提出了与目前观测技术和资料传输技术相适应的边界条件和初始场计算方法。
“Numerical simulation of current” is the core issue of “Study on Numerical Simulation of Marine Environment” item 76 of the National “Seventh Five-Year” research project. Based on seven partial differential equations about the relationship between seawater momentum, water quantity and heat balance and the relationship between seawater density and temperature, salinity and pressure, the present work simplifies the equations by means of the order of magnitude analysis and builds an adaptive business forecast Then, the PDEs are discretized, and the finite difference equations adapted to computer operations are derived. At the same time, the boundary and initial conditions are studied, and the boundary conditions and the initial field calculation methods are presented in accordance with the current observation and data transmission technologies.