| 海洋工程引发的悬浮物扩散预测模型优化 |
| Optimization of the Prediction Model of Suspended Matter Diffusion Caused by Marine Engineering |
| |
| DOI： |
| 中文关键词: 雷诺平均的Navier-Stokes方程 对流扩散水质模型 影响贡献度系数 |
| 英文关键词:Reynolds-averaged Navier-stokes equations convective diffusion water quality model impact contribution degree parameter |
| 基金项目:海洋公益性行业科研专项经费项目（201405007）和国家海洋技术中心科技创新基金项目“应用于海洋水质监测仪器的数据现场分析与展示模块构建”资助 |
|
| 摘要点击次数: 900 |
| 全文下载次数: 0 |
| 中文摘要: |
| 本文在详细了解工程附近海域自然状况的基础上，基于雷诺平均的Navier-Stokes方程组模拟该海域的水动力状况，采用有限体积数值格式离散水动力学方程。在此基础上，引入该海域附近两个建设工程的影响，基于对流扩散的水质模型模拟悬浮物浓度场的分布状况，并分别计算了两个工程对海域的影响程度-即影响贡献度。通过实测数据验证了模型的准确性和实用性。经过结果分析可知，工程2对控制点的影响较工程1的影响贡献度系数小65%左右，这主要是由于工程1相对于工程2距离湾顶更近，水深较浅，海流速度较小，海水交换能力较差，扩散能力也较弱造成的。 |
| 英文摘要: |
| On the basis of a deep understanding of the natural conditions of the sea area adjacent to marine engineering, the hydrodynamic regime of engineering adjacent sea area is simulated by the Reynolds-averaged Navier-stokes equations. Then nested by the models of sea area near two engineering constructions, the water level boundary conditions are interpolated and calculated by full hydrodynamic free-surface numerical finite volume discrete model using coarse grids. The distributions of particle concentration filed are simulated by a two-dimensional water quality convective diffusion numerical model considering the impact of point source intensity of two engineering constructions. The maximal concentration growth caused by the two engineering constructions are selected as water quality control points, while continuous concentrations of per unit intensity of pollutants are set to engineering construction locations to calculate the impact contribution degree parameters of the two constructions on water quality control points. It can be concluded that the impact contribution degree of engineering construction 1 is much greater than that of construction 2 by 65%, which is attributed to construction site and hydrodynamic regime: construction 1 is located at bayhead, and therefore has shallower water depth, lower current velocity, weaker water exchange ability and lower dispersal ability. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
