On the impact of debris accumulation on power production of marinehydrokinetic turbines:Insights gained via LES  

作　　者：Mustafa MeriçAksen Kevin Flora Hossein Seyedzadeh Mehrshad Gholami Anjiraki Ali Khosronejad 

机构地区：[1]Department of Civil Engineering,Stony Brook University,Stony Brook,NY 11794,USA

出　　处：《Theoretical & Applied Mechanics Letters》2024年第6期519-530,共12页力学快报(英文版)

基　　金：supported by the United States Department of Energy’s Office of Energy Efficiency and Renewable Energy (EERE) under the Water Power Technologies Office (WPTO) (Grant No.DEEE0009450);the National Science Foundation (Grant No.2233986)

摘　　要：We present a series of large-eddy simulations to systematically investigate the impact of debris accumulation onthe hydrodynamics and power production of a utility-scale marine hydrokinetic(MHK)turbine under variousdebris loads lodged on the upstream face of the turbine tower.The turbine blades are modeled using turbineresolving,actuator line,and actuator surface methods.Moreover,the influence of debris on the flow field iscaptured by directly resolving individual logs and employing a novel debris model.Analyzing the hydrodynamicseffects of various debris accumulations,we show that an increase in the density of debris accumulation leads tomore flow bypassing beneath the turbine blade.This,in turn,reduces the flow momentum that reaches theMHK blades at the lower depths,inducing significant fluctuation in power production.Further,it is shown thatdebris-induced turbulent fluctuations contribute to significant variability in the MHK turbine’s power production.

关 键 词：Large-eddy simulations Marine hydrokinetic turbine Actuator models Debris accumulations Debris model 

分 类 号：F42[经济管理—产业经济]