| 内孤立波波致流场数值模拟研究 |
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| 引用本文： | 王伟,郭海燕,王飞,苗得胜,马东.内孤立波波致流场数值模拟研究[J].海洋与湖沼,2016,47(3):502-508. |
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| 作者姓名： | 王伟 郭海燕 王飞 苗得胜 马东 |
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| 作者单位： | 中国海洋大学工程学院 青岛 266100,中国海洋大学工程学院 青岛 266100,山东科技大学土木工程与建筑学院 青岛 266590,中国海洋大学工程学院 青岛 266100,中国海洋大学工程学院 青岛 266100 |
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| 基金项目： | 国家自然科学基金项目，51279187号；山东省科技重大专项项目，2015ZDZX04003号。 |
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| 摘 要： | 基于KdV、mKdV理论,利用Fluent计算软件,采用"平板拍击"造波方法,进行内孤立波数值模拟,并与物理实验结果进行对比验证。利用数值模拟结果,分析内孤立波波致流场变化,结果表明:上下层流体中波致水平流速方向相反,均呈现先增加后减小的变化趋势,且波谷经过时刻流速最大;在波谷经过断面处,波致水平流速在上层流体中沿垂向分布无明显变化,在波面以下的下层流体中有衰减趋势,但衰减很小;两层流体界面与波谷之间存在过渡水深范围,水平流速在该水深范围内沿垂向衰减明显,且随内孤立波振幅的增大,过渡水深范围有所增大。
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| 关 键 词： | Fluent 内孤立波 数值模拟 流场特性 物理实验 |
| 收稿时间： | 2015/6/15 0:00:00 |
| 修稿时间： | 9/4/2015 12:00:00 AM |
A NUMERICAL SIMULATION ON FLOW FIELD INDUCED BY INTERNAL SOLITARY WAVES |
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| WANG Wei,GUO Hai-Yan,WANG Fei,MIAO De-Sheng and MA Dong.A NUMERICAL SIMULATION ON FLOW FIELD INDUCED BY INTERNAL SOLITARY WAVES[J].Oceanologia Et Limnologia Sinica,2016,47(3):502-508. |
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| Authors: | WANG Wei GUO Hai-Yan WANG Fei MIAO De-Sheng and MA Dong |
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| Institution: | Engineering College, Ocean University of China, Qingdao 266100, China,Engineering College, Ocean University of China, Qingdao 266100, China,College of Architecture and Civil Engineering, Shandong University of Science and Technology, Qingdao 266590, China,Engineering College, Ocean University of China, Qingdao 266100, China and Engineering College, Ocean University of China, Qingdao 266100, China |
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| Abstract: | Based on KdV and mKdV theories, we simulated internal solitary waves generated in flat slapping piston wave-making technology with software Fluent. We then verified the the flow characteristics against experimental data. The results show that the wave-induced horizontal velocities are opposite in direction between upper and lower layers of fluid, showing a trend of going up first, reaching the maximum when passing the trough of the internal wave, and then going down. Across the trough, the wave-induced velocities in vertical distribution in upper layer did not change remarkably; and they decayed slightly in the lower layer. A transitional zone was observed between the interface of the two layers and the wave trough surface, in which the wave-induced velocities weakened obviously. With the increase in amplitude of internal solitary wave, the range of the transitional zone increased too. |
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| Keywords: | Software Fluent internal solitary wave numerical simulation flow characteristics physical experiment |
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