钦州湾三维潮流数值模拟

The Numerical Value Simulation of the Three Qimensional Tide of the Qinzhou Bay

关键词:  三维潮流模型  潮位  潮流  数值计算

Key words:  three dimension tide model  tide level  tide way  numerical value calculation

摘要:

采用潮流控制方程和湍流封闭方程构建完整的三维浅海潮波定解方程组,通过建立钦州湾三维潮流数值模型来重现计算钦州湾的潮位和潮流变化状况.模拟结果与同步进行的岸边潮位及海上潮流的观测值校验结果表明,实测潮位资料与对应时间的计算结果吻合良好,潮位变化为1d中出现1次高潮和1次低潮,1个月内出现2次大潮和2次小潮,大潮潮流约40m,小潮潮流约10m.实测潮流与对应时间的计算结果十分接近.最大流发生时刻、转流时间以及潮流性质与计算结果相差不大,潮流速度和潮流方向也与计算结果较为一致.模拟计算结果真实地反映钦州湾的潮位变化和潮流运动状况.

Abstract:

To meet the transportation need of the pollutant which comes from the project devetopmeu for the constructive engineering of the Qinzhou Bay power plant,the compete three dimensional fined solution equation group of the shallow sea tide,which consists of the tide control equation and obturate of turbulence equation,was adopted to calculate the tide level and the tide way of the Qinzhou Bay.The results,compared with the simultaneously measured value of the bank tide level and the tide at sea,show that,the practical measured data coincide very well with the calculations at the comesponding time,and,the change of the tide is that the high tide and the low tide each occurs once in a day,besides,the neap tide and the spring tide each occurs twice within one month,moreover,the spring tide is about 4.0 m and the neap tide is 1.0 m.The practical measured data of the tide are quite close to the calculations.The moment that the biggest tide appears,the change time and the quality of the tide are not far from the calculations.The velocity and the direction of the tide are also rather consistent with the calculations.The calculated results,which actually report the change of the tide level and the movement of the tide of the Qinzhou Bay,provide scientific basis for project development.