一个非定常边界层模式的设计

DESIGN OF A NON-STATIONARY BOUNDARY LAYER MODEL

关键词:  非定常边界层  湍流交换系数  行星边界层  位温  K模式

Key words:  Now-stationary boundary layer  Turbulent exchange coefficient  Planetary boundary layer  Polential temperature  Κ model

摘要:

对一般的非定常边界展模式,在铅直坐标的变换、时间差分方案的确定、湍流交换系数K的选取等方面,进行了一系列的试验和比较,得到一个优化方案。结果表明:该优化方案具有较大的、较广泛的实用性。但是,即使在其它方面被优化的模式,仍然存在着对不同K公式的协调性问题。

Abstract:

A general non-stationary boandary layer model was put through a series of experiments and comparisons in terms of the conversion of vertical coordinate, adoptation of time differential scheme, determination of turbulent exchange, coefficient A, making it more widely available and closer to perfection. On the other hand. the design reveals that the appropriate selection and treatment of A" and its coordination with models remains a problem.