| 潮汐河口平面二维非恒定流数值模拟 |
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| 引用本文： | 张细兵,吴腾,卢金友,韦直林. 潮汐河口平面二维非恒定流数值模拟[J]. 水动力学研究与进展(A辑), 2003, 18(4): 414-418 |
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| 作者姓名： | 张细兵 吴腾 卢金友 韦直林 |
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| 作者单位： | 长江科学院河流所,湖北武汉,430010;武汉大学水利水电学院,湖北武汉,430072;武汉大学水利水电学院,湖北武汉,430072;长江科学院河流所,湖北武汉,430010 |
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| 基金项目： | 国家自然科学基金项目 (项目编号 :5 0 1790 0 1,5 0 0 9962 0 ) |
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| 摘 要： | 本文基于三角形网格划分,采用有限元法,建立了平面二维非恒定潮流数学模型。采用了质量集中、压缩存储的处理方法和“预估校正”的时间推进算法,较好地解决了有限元计算存储量和计算速度问题。对长江口南北支河段进行了验证计算,结果表明模型能较好模拟长江口南北支河段的潮流运动情况,且计算稳定性好、速度快、精度高。
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| 关 键 词： | 平面二维潮流 数值模拟 有限元 |
| 文章编号： | 1000-4874(2003)04-0414-05 |
| 修稿时间： | 2002-11-29 |
Horizontal 2-D unsteady flow numerical simulation of tidal estuary |
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| ZHANG Xi-bing ,,WU Teng ,LU Jin-you ,WEI Zhi-lin. Horizontal 2-D unsteady flow numerical simulation of tidal estuary[J]. Chinese Journal of Hydrodynamics, 2003, 18(4): 414-418 |
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| Authors: | ZHANG Xi-bing WU Teng LU Jin-you WEI Zhi-lin |
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| Affiliation: | ZHANG Xi-bing 1,2,WU Teng 2,LU Jin-you 1,WEI Zhi-lin 2 |
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| Abstract: | Based on triangular grids and finite element method, a planar 2-D unsteady tidal flow mathematical model is established in the article. Since the methods lumped of mass,compressed memory and predictor-corrector are used to solve the equations, the questions of memory units and calculation speed are settled quite well. Simulation calculation of the south and north reach of the Yangtze River estuary is carried out. Results show that tidal flow field is simulated successfully and calculations are quite stable, fast and accurate. |
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| Keywords: | horizontal 2-D tidal flow numerical simulation finite element method |
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