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Journal of Tropical Oceanography >

2012 , Vol. 31 >Issue 2: 34 - 40

DOI: https://doi.org/10.11978/j.issn.1009-5470.2012.02.005

Marine geomorphology

Energy dissipation and its mechanism induced by “gate” topography

  • Ni-Pei-Dong ,
  • Tun-Chao-Hu ,
  • Liu-Huan
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  • 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 date: 2010-09-08

  Revised date: 2011-01-16

  Online published: 2012-06-05

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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” morphological unit; characteristics of average flow and turbulent flow; energy dissipation; energy dissipation zone

Cite this article

Ni-Pei-Dong , Tun-Chao-Hu , Liu-Huan . Energy dissipation and its mechanism induced by “gate” topography[J]. Journal of Tropical Oceanography, 2012 , 31(2) : 34 -40 . DOI: 10.11978/j.issn.1009-5470.2012.02.005

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