两种湍流参数化方案针对水体温度演变过程的模拟与比较

Simulation and comparison of the evolution of water temperature with two turbulence parameterization schemes

依据山东跋山水库的观测数据,采用MY2.5参数化方案和κ-ε参数化方案在不同的表面边界条件下模拟观测的温度剖面演化过程。模拟结果显示,在风应力强迫的表面边界条件下,采用这两种参数化方案的模拟结果差别不大;当考虑Mellor和Blumberg的波浪破碎表面边界条件时,采用MY2.5参数化方案的模拟结果没有明显的改善,但采用κ-ε参数化方案的模拟结果有明显的改善,得到与观测相符的模拟结果。

Based on the observed data in BaShan Lake,the evolution of observed temperature was simulated with MY2.5 parameterization scheme and κ-ε parameterization scheme under different surface boundary conditions.The simulated results were almost same with the two kinds of parameterization scheme under wind forcing surface boundary condition.When the wave breaking surface boundary condition developed by Mellor and Blumberg was considered,the simulated results with MY2.5 parameterization scheme were＇t improved obviously but the results with κ-ε parameterization scheme were improved much which were similar with observed temperature profiles.