| 径流和风对涌潮影响的数值模拟 |
| |
| 引用本文： | 张舒羽,潘存鸿.径流和风对涌潮影响的数值模拟[J].海洋工程,2013,31(3):54-62. |
| |
| 作者姓名： | 张舒羽 潘存鸿 |
| |
| 作者单位： | 浙江省水利河口研究院， 浙江 杭州 310020;浙江省水利河口研究院， 浙江 杭州 310020 |
| |
| 基金项目： | 国家自然科学基金资助项目(10772163)；水利部公益性行业科研专项资助项目(201001072)；浙江省重点科技创新团队资助项目(2010R50035)；浙江省自然科学基金资助项目（LY12E09010 |
| |
| 摘 要： | 由于实际江道中地形和江道轮廓等复杂性,难以分析涌潮演变规律。以钱塘江河口为基础,建立了概化河口的水动力数学模型,将复杂问题简单化,通过数学模型计算分析了径流和风况对潮差、涨潮历时、涌潮高度和涌潮传播速度的影响。结果表明,不同河段存在涌潮高度最大值的相应临界流量,越往下游,临界径流量越大;涌潮高度随风向变化规律是"逆风"<"无风"<"顺风";顺风条件下,风速越大,涌潮高度越大。
|
| 关 键 词： | 概化模型 涌潮 径流 风况 钱塘江 |
Effect of runoff and wind on tidal bore using numerical model |
| |
| ZHANG Shu-yu and PAN Cun-hong.Effect of runoff and wind on tidal bore using numerical model[J].Ocean Engineering,2013,31(3):54-62. |
| |
| Authors: | ZHANG Shu-yu and PAN Cun-hong |
| |
| Institution: | Zhejiang Institute of Hydraulics and Estuary, Hangzhou 310020,China;Zhejiang Institute of Hydraulics and Estuary, Hangzhou 310020,China |
| |
| Abstract: | The law of the tidal bore is difficult to discover due to the complexity of terrain and river profile, etc. in actual rivers. Based on the Qiantang Estuary, a generalized hydrodynamic model of a macro tidal estuary is built. This makes the complex problem simplified. With this model, the effect of runoff and wind condition on tidal range, flood duration, the height and propagation speed of the tidal bore is calculated and analyzed. It shows that there is a critical discharge corresponding to different reaches for the maximum height of the tidal bore. The critical discharge is larger at upstream than downstream. The size order of tidal bore height under wind direction is following wind, windless and upwind. The larger the wind speed under the following wind, the greater the tidal bore height. |
| |
| Keywords: | generalized model tidal bore runoff wind Qiantang River |
|
| 点击此处可从《海洋工程》浏览原始摘要信息 |
| 点击此处可从《海洋工程》下载免费的PDF全文 |
|
