Advanced three-dimensional numerical simulation on influence of MS2AF on scour protection considering seabed response: A coupled CFD-FEM method

被引：0

作者：

Zhu, Chenghao ^{[1
,2
]}

Liu, Xinyu ^{[1
,2
]}

Yang, Qi ^{[3
]}

Zang, Wenkun ^{[4
]}

Liu, Hongjun ^{[1
,2
,5
]}

Liu, Xiaolong ^{[1
,2
]}

机构：

[1] Ocean Univ China, Key Lab Shandong Prov Marine Environm & Geol Engn, 238 Songling Rd, Qingdao 266100, Peoples R China

[2] Ocean Univ China, Coll Environm Sci & Engn, 238 Songling Rd, Qingdao 266100, Peoples R China

[3] Tsinghua Univ, Dept Hydraul Engn, 1 Tsinghua Garden, Beijing 100084, Peoples R China

[4] Qingdao Geotech Invest & Surveying Res Inst, 870 Tongan Rd, Qingdao 266035, Peoples R China

[5] Ocean Univ China, Key Lab Marine Environm & Ecol, Minist Educ, 238 Songling Rd, Qingdao 266100, Peoples R China

来源：

OCEAN ENGINEERING | 2025年 / 324卷

基金：

中国国家自然科学基金;

关键词：

Multihole sector suction anchor foundation; Seabed response; Local scour; Computational fluid dynamics (CFD); Finite element method (FEM); Protection performance; LOCAL SCOUR; FLOW; EVOLUTION; MONOPILE; WAVES; MODEL; PIER; PILE;

D O I：

10.1016/j.oceaneng.2025.120625

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

Offshore wind turbine foundations face severe local scour, exacerbated by seabed responses to wave and current action. Numerical simulation methods effectively simulate the local scour around foundations. However, traditional simulation methods often overlook the influence of seepage induced by seabed responses on the local scour, hindering the accurate estimation and mechanistic studies of scour. This study used the coupled computational fluid dynamics-finite element method scour model (CFD-FEM-SM) to establish the coupling between scour process and seabed response. The aim was to investigate the impact of seabed response around the multihole sector suction anchor foundation (MS2AF) on local scour. To enhance the computational efficiency, a zonal averaging correction method was designed to partition the seabed into blocks for adjustment. The CFDFEM-SM was validated against experimental data and analytical solutions for accuracy in simulating seabed response and local scour, and it was constructed based on scour experiments. Based on simulation results, the time evolution of scour, scour patterns, surrounding flow fields, seabed responses, seepage influence factor and influence of the seabed response on local scour were analyzed. The protection efficiency under the influence of seepage of the MS2AF was examined, and the optimized design parameters for the MS2AF were summarized.

引用

页数：25