摘要
用ADI法模拟计算了大连湾及附近海域M_2分潮潮流场,在处理平流项时采用迎风格式,在每一时间步长,产生一个只包含水位的三对角方程组,并用Thomas算法求解.可节省大量计算机内存和计算时间.将模拟结果与实测资料比较,二者吻合较好.并根据计算结果分析了大连湾及附近海域的潮流特征.潮流的主要运动形式为往复流,开阔海域最大流速约50cm/s,各湾自湾口至湾顶流速呈递减趋势.湾顶附近流速均在5cm/s以下.
ADI method is used in computing M2 tidal current field in Dalian Bay and neighbouring water area. In dealing with advective term, the up-wind scheme was used, the triangular equtions which includes water elevation only for every time-step was created and Thomas solution was applied to save a great volume of memory and time. In terms of the computed results, which accorded well with observed data, the characteristics of tidal current field were analysed, through which the reversing current was found dominant. The maximun current speed was about 50 cm/s in the open area. But current speed decreases from the mouth of the bay to the top of the bay, where the speed was smaller than 5 cm/s.
出处
《海洋通报》
CAS
CSCD
北大核心
1994年第4期20-25,共6页
Marine Science Bulletin
关键词
数值计算
潮流
大连湾
海流
ADI method
Dalian Bay
tidal current field
numerical computation
