Comparative Experimental and Numerical Study of Wave Loads on A Monopile Structure Using Different Turbulence Models  

作　　者：ZENG Xin-meng SHI Wei Constantine MICHAILIDES WANG Kai LI Xin 

机构地区：[1]DeepWater Engineering Research Centre,Dalian University of Technology,Dalian 116024,China [2]State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China [3]Civil Engineering and Geomatics,Cyprus University of Technology,Limassol 2026,Cyprus [4]School of Marine Engineering and Technology,Sun Yat-Sen University,Zhuhai 51900,China

出　　处：《China Ocean Engineering》2021年第4期554-565,共12页中国海洋工程（英文版）

基　　金：the National Natural Science Foundation of China(Grant Nos.52071058 and 51939002);Liaoning Revitalization Talents Program(Grant No,XLYC1807208);the Special Funds for Promoting High Quality Development from Department of Natural Resources of Guangdong Province(Grant No.GDNRC[2020]015).

摘　　要：This study numerically and experimentally investigates the effects of wave loads on a monopile-type offshore wind turbine placed on a 1:25 slope at different water depths as well as the effect of choosing different turbulence models on the efficiency of the numerical model.The numerical model adopts a two-phase flow by solving Unsteady Reynolds-Averaged Navier−Stokes(URANS)equations using the Volume Of Fluid(VOF)method and three differentk-ωturbulence models.Typical environmental conditions from the East China Sea are studied.The wave run-up and the wave loads applied on the monopile are investigated and compared with relevant experimental data as well as with mathematical predictions based on relevant theories.The numerical model is well validated against the experimental data at model scale.The use of different turbulence models results in different predictions on the wave height but less differences on the wave period.The baseline k-ωturbulence model and Shear-Stress Transport(SST)k-ωturbulence model exhibit better performance on the prediction of hydrodynamic load,at a model-scale water depth of 0.42 m,while the laminar model provides better results for large water depths.The SST turbulence model performs better in predicting wave run-up for water depth 0.42 m,while the laminar model and standard k-ωmodel perform better at water depth 0.52 m and 0.62 m,respectively.

关 键 词：hydrodynamic loads turbulence models Morison equation wave run-up numerical wave tank monopile structure 

分 类 号：U661[交通运输工程—船舶及航道工程] P75[交通运输工程—船舶与海洋工程]