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| “门”地貌单元的能量耗散和过程机制 | |
| 引用本文： | 倪培桐,吴超羽,刘欢.“门”地貌单元的能量耗散和过程机制[J].热带海洋学报,2012(2):34-40. |
| 作者姓名： | 倪培桐 吴超羽 刘欢 |
| 作者单位： | 1. 中山大学环境科学与工程学院,广东广州510275 2. 广东省水利水电科学研究院,广东广州510630 3. 中山大学近岸海洋科学与技术研究中心,广东广州510275 |
| 基金项目： | 国家自然科学基金项目(41006050) |
| 摘 要： | 基岩岛屿组成的"门"地貌单元是珠江河口区别于世界其他河口的重要地貌特征之一。文章基于重整化群k-ε湍流模型(RNG k-ε)的FLOW3D流体计算模型研究了"门"地貌单元的时均动力结构及湍流能耗特性。"门"地形致动力结构伴随不同类型能耗区。根据能耗空间分布特性可分为核心区(A1区)、混合区(A2区)、上游区(A3区)、下游区(A4区)。"门"地形作用下,不同分区的动力结构、湍流特性、能量转化、能量耗散特征及其驱动机制不同。 |
| 关 键 词： | “门”地形 时均与湍流特性 能量耗散 能耗分区 |
Energy dissipation and its mechanism induced by “gate” topography |
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| NI Pei-tong,WU Chao-yu,LIU Huan.Energy dissipation and its mechanism induced by “gate” topography[J].Journal of Tropical Oceanography,2012(2):34-40. | |
| Authors: | NI Pei-tong WU Chao-yu LIU Huan |
| Institution: | 1.School of Environmental Science and Engineering of Sun Yat-sen University,Guangzhou 510275,China;2.Guangdong Research Institute of Water Resources and Hydropower,Guangzhou 510630,China;3.Center for Coastal Ocean Science and Technology Research,Sun Yat-sen University,Guangzhou 510275,China |
| Abstract: | The Pearl River Estuary system is distinguished from other estuary systems with its "men"(meaning "gate" in Chinese),a special morphological unit,which produces complicated average flow and turbulent flow,and impacts its energy dissipation.Based on FLOW3D’s RNG(Re-Normalization Group) k-ε model,the authors studied the energy dissipation and its mechanism induced by "gate" topography.The sub-area of the energy dissipation zone can be distinguished with the jet core zone(A1 zone),the mixing zone(A2 zone),the far zone(A3 zone and A4 zone).The conservation of mechanical energy and the mechanism of these subareas are different. |
| Keywords: | "men" morphological unit characteristics of average flow and turbulent flow energy dissipation energy dissipation zone |
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