Numerical simulation of the hydrodynamic process of rip current hazard

Tian Haiping; Chen Lei; Wang Wei; Xin Libiao

doi:10.12284/hyxb2021175

Volume 43 Issue 12

Dec. 2021

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Tian Haiping，Chen Lei，Wang Wei, et al. Numerical simulation of the hydrodynamic process of rip current hazard[J]. Haiyang Xuebao，2021, 43(12)：92–101 doi: 10.12284/hyxb2021175

Citation:

Tian Haiping，Chen Lei，Wang Wei, et al. Numerical simulation of the hydrodynamic process of rip current hazard[J]. Haiyang Xuebao，2021, 43(12)：92–101 doi: 10.12284/hyxb2021175

Citation:

Tian Haiping，Chen Lei，Wang Wei, et al. Numerical simulation of the hydrodynamic process of rip current hazard[J]. Haiyang Xuebao，2021, 43(12)：92–101 doi: 10.12284/hyxb2021175

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Numerical simulation of the hydrodynamic process of rip current hazard

doi: 10.12284/hyxb2021175

Tian Haiping^1
,,
Chen Lei^{1, 2
,
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Wang Wei¹,
Xin Libiao¹

1.
National Demonstration Center for Experimental Mechanics Education, Taiyuan University of Technology, Taiyuan 030024, China
2.
School of Mechanics and Civil Architecture, Northwest Polytechnic University, Xi 'an 710129, China

Received Date: 2020-09-03
Rev Recd Date: 2020-10-30

Available Online: 2021-12-21

Publish Date: 2021-12-30

Abstract

Abstract

Rip current is an important part of nearshore current. Affected by special beach topography, waves will form a high velocity flow moving along the offshore direction, which can quickly take people away from the shore and pose a threat to beach safety. In order to further explore the formation mechanism and hydrodynamics characteristics, three-dimensional numerical simulation of rip current was carried out. In this paper, based on the second-order Stokes wave theory, a typical sandbar model with variable cross-section is adopted and used to generate rip current. The free liquid surface is captured by volume of fluid method. The rip current flow field distribution laws of instantaneous velocity, time-averaged velocity and pressure are analyzed and made some discoveries: there is a pair of opposite water circulation systems between the bar and the shoreline. By comparing the velocity distribution of rip current a different depth, the interaction between waves and rip currents is understood. Furthermore, the influence of incident wave height on intensity and distribution of rip current is also studied, which deepens the understanding of the hydrodynamic process of rip current.
- rip current,
- numerical simulation,
- second-order Stokes waves,
- three-dimensional flow field,
- barred beach

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References(21)

References

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