“门” 地貌单元的能量耗散和过程机制

doi:10.11978/j.issn.1009-5470.2012.02.005

Journal of Tropical Oceanography ›› 2012, Vol. 31 ›› Issue (2): 34-40.doi: 10.11978/j.issn.1009-5470.2012.02.005cstr: 32234.14.j.issn.1009-5470.2012.02.005

• Marine geomorphology • Previous Articles Next Articles

Energy dissipation and its mechanism induced by “gate” topography

NI Pei-tong^1,2, WU Chao-yu³, LIU Huan¹

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

Received:2010-09-08 Revised:2011-01-16 Online:2012-06-05 Published:2012-06-05

Abstract

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.

Key words: “men&rdquo, morphological unit, characteristics of average flow and turbulent flow, energy dissipation, energy dissipation zone

CLC Number:

P737.1

NI Pei-tong,WU Chao-yu,LIU Huan. Energy dissipation and its mechanism induced by “gate” topography[J].Journal of Tropical Oceanography, 2012, 31(2): 34-40.

References

UNCLE R. Estuarine physical processes research: Some recent studies and progress[J]. Estuarine, Coastal and Shelf Science, 2002, 55: 829-856.
SIGNELL R P, GEYER W R. Transient eddy formation around headlands[J]. Journal of Geophysical Research, 1991, 96(C2): 2561-2575.
LUECK R G, MUDGE T D．Topographically induced mixing around a shallow seamount[J]. Science, 1997, 276: 1831-1833.
FURUKAWA K, WOLANSKI E. Shallow-water Frictional Effects in Island Wakes[J]. Estuarine, Coastal and Shelf Science, 1998, 46: 599-608.
NEILL S P, ELLIOTT A J. In situ measurements of spring-neap variations to unsteady island wake development in the Firth of Forth, Scotland[J]. Estuarine, Coastal and Shelf Science, 2004, 60(2): 229-239.
KUNZE E G, SMITH G. The role of small-scale topography in turbulent mixing of the global ocean[J]. Oceanography, 2004 17(1): 55-64.
吴超羽, 任杰, 包芸, 等. 珠江河口“门”的地貌动力学初探[J]. 地理学报, 2006, 61(5): 537-548.
吴超羽, 包芸, 任杰, 等. 珠江三角洲及河网形成演变的数值模拟和地貌动力学分析: 距今6000—2500a [J]. 海洋学报, 2006, 28(4): 64-80.
吴超羽, 何志刚, 任杰, 等. 珠江三角洲中部子平原形成演变机理研究——以大鳌平原为例[J]. 第四纪研究, 2007, 27(5): 814-827.
刘欢. 珠江河口地形致高能耗区的消能特点和机理研究[D]. 广州: 中山大学, 2009:176-177.
刘欢, 吴超羽, 许炜铭, 等. 珠江河口底边界层湍流特征量研究[J]. 海洋工程, 2009, 27(1): 62-69.
倪培桐, 地形致动力场对珠江河口能量耗散及其作用机制[D]. 广州: 中山大学, 2010: 203-225.
王福军. 计算流体力学分析——CFD 软件原理与应用[M]. 北京: 清华大学出版社, 2004: 112-143.
Flow Science Inc. FLOW-3D User’s Manual, version 9.3[M/CD]. Los Alamos, New Mexico：Flow Science Inc, 2008.
余常昭. 紊动射流[M]. 北京: 高等教育出版社, 1993: 4-5.
ZHONG L, LI M. Tidal energy fluxes and dissipation in the Chesapeake Bay[J]. Continental Shelf Research, 2006, 26(6): 752-770.
任杰, 吴超羽, 包芸. 珠江虎门口动力结构研究[J], 中山大学学报: 自然科学版, 2006, 45(3):105-109.
贾良文, 吴超羽, 任杰. 珠江口磨刀门河口动力平衡特点人珠江及人类活动对其影响[J]. 海洋工程, 2006, 24(2): 53-60.
吴晓星. 黄茅海河口主要动力结构分析及其三维数值模拟[D] . 广州: 中山大学, 2009: 101-103.

[1]	GAO Shu, JIA Jianjun, YU Qian. Green sea dykes: an overview of their principles of sediment, geomorphology and ecosystem dynamics [J]. Journal of Tropical Oceanography, 2022, 41(4): 1-19.
[2]	LI Yang, HUANG Pengqi, LU Yuanzheng, QU Ling, GUO Shuangxi, CEN Xianrong, ZHOU Shengqi, ZHANG Jiazheng, QIU Xuelin. Bottom turbulent mixing of continental slope - deep sea basin in northeastern South China Sea based on high-resolution temperature observation [J]. Journal of Tropical Oceanography, 2022, 41(1): 62-74.
[3]	ZHANG Hua, WEN Xixi, PENG Shiqiu. Numerical simulation of barotropic tides in Mozambique Strait and its adjacent coastal area and energy budget analysis^* [J]. Journal of Tropical Oceanography, 2021, 40(2): 7-16.
[4]	ZHU Xue-ming, SONG De-hai, BAO Xian-wen, LIU Gui-mei. Tidal energy flux and dissipation in the Northwest Pacific [J]. Journal of Tropical Oceanography, 2014, 33(1): 1-9.
[5]	LIU Huan,WU Chao-yu,BAO Yun . Energy flux and dissipation in the Pearl River Estuary [J]. Journal of Tropical Oceanography, 2011, 30(3): 16-23.

Energy dissipation and its mechanism induced by “gate” topography

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 5

Metrics

Comments

Recommended 0