Journal
JOURNAL OF MARINE SCIENCE AND ENGINEERING
Volume 6, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/jmse6030088
Keywords
wave-current-seabed interaction; RANS equations; k-epsilon model; current velocity; seabed liquefaction
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Funding
- National Science Foundation of China [41727802, 51678360, 41602282]
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An integrated numerical model is developed to study wave and current-induced seabed response and liquefaction in a flat seabed. The velocity-inlet wave-generating method is adopted in the present study and the finite difference method is employed to solve the Reynolds-averaged Navier-Stokes equations with k-epsilon turbulence closure. The model validation demonstrates the capacity of the present model. The parametrical study reveals that the increase of current velocity tends to elongate the wave trough and alleviate the corresponding suction force on the seabed, leading to a decrease in liquefaction depth, while the width of the liquefaction area is enlarged simultaneously. This goes against previous studies, which ignored fluid viscosity, turbulence and bed friction.
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