| 风应力拖曳系数选取对风暴潮数值模拟的影响 |
| |
| 引用本文： | 王秀芹,钱成春,王伟.风应力拖曳系数选取对风暴潮数值模拟的影响[J].中国海洋大学学报(自然科学版),2001,31(5):640-646. |
| |
| 作者姓名： | 王秀芹 钱成春 王伟 |
| |
| 作者单位： | 青岛海洋大学海洋环境学院 |
| |
| 基金项目： | 山东省自然科学基金课题 (Q99E0 2 )资助 |
| |
| 摘 要： | 在风暴潮的形成中风应力起决定性作用 ,风应力拖曳系数决定了大气与海洋间的动量传输率。观测结果表明 ,风应力拖曳系数随风速而变化 ,与海面粗糙度有关。文中采用几种与风速有关的风应力拖曳系数表达式进行数值模拟 ,与将其视为常数情况相比较 ,计算结果的精度均有较明显提高。对比各表达式模拟结果 ,采用 Smith(1980 )风应力拖曳系数公式的模拟效果为最好
|
| 关 键 词： | 风暴潮 风应力拖曳系数 数值模拟 黄渤海 |
| 文章编号： | 1001-1862(2001)05-640-07 |
| 修稿时间： | 2000年12月7日 |
Test of Influence of Wind Drag Coefficient on Typhoon Storm Surge Simulations |
| |
| Wang Xiuqin,Qian Chengchun,Wang Wei.Test of Influence of Wind Drag Coefficient on Typhoon Storm Surge Simulations[J].Periodical of Ocean University of China,2001,31(5):640-646. |
| |
| Authors: | Wang Xiuqin Qian Chengchun Wang Wei |
| |
| Abstract: | Wind stress plays a major role i n the formation and propagation of storm surges. In the numerical simulation of storm surges, wind stress is expressed as an empirical power low of wind speed, where the drag coefficient decides the rate of momentum transmission from air in to water. Observations show that the drag coefficient increases gradually with t he increase of wind speed and is a function of surface roughness and atmospheric stability. In this paper, several proposed formulae of the drag coefficient var ying with the wind speed have been examined with numerical simulations of storm surges. The elevations simulated with varying drag coefficients coincide much be tter with the observed data than those with the constant drag coefficients. The best result is obtained when the formula proposed by Smith (1980) is adopted. |
| |
| Keywords: | storm surge wind drag coefficient numerical simulat ion Bohai and Huanghai Sea |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
