首页|Observing eddy dye patches induced by shear instabilities in the surf zone on a plane beach

Observing eddy dye patches induced by shear instabilities in the surf zone on a plane beach

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
  • 维普
The effects of surf zone eddy generated by alongshore currents on the deformation and transport of dye are still poorly understood,and related tracer release experiments are lacking.Therefore,a tracer release laboratory experiment was conducted under monochromatic,unidirectional incident waves with a large incident angle(30°)on a plane beach with a 1:100 slope in a large wave basin.A charge-coupled device suspended above the basin recorded the dye patch image.The evolution of eddy dye patch was observed and the transport and diffusion were analyzed based on the collected images.Subsequently,a linear instability numerical model was adopted to calculate the perturbation velocity field at the initial stage.The observation and image processing results show that surf zone eddy patches occurred and were separated from the original dye patches.Our numerical analysis results demonstrate that the structure of the perturbation velocity field is consistent with the experimental observations,and that the ejection of eddy patches shoreward or offshore may be ascribed to the double vortex.

surf zonetracer release experimentevolution of eddy patchshear instability of alongshore currents

Chunping Ren、Nannan Fu、Chong Yu、Yuchuan Bai、Kezhao Fang

展开 >

State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China

College of Water Resource Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China

State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China

open foundation of the State Key Laboratory of Hydraulic Engineering Simulation and SafetyShanxi Province Science Foundationresearch project supported by Shanxi Scholarship Council of China

HESS-20062021030212241162023-067

2024

10.1007/s13131-023-2270-y

海洋学报(英文版)
中国海洋学会

海洋学报(英文版)

CSTPCD
影响因子：0.323
ISSN：0253-505X
年,卷(期)：2024.43(3)
  • 49