典型文献
Utilization of Whale-inspired Leading-edge Tubercles for Airfoil Noise Reduction
文献摘要：
Numerical studies are conducted to explore the noise reduction effect of leading-edge tubercles inspired by humpback whale flippers.Large eddy simulations are performed to solve the flow field,while the acoustic analogy theory is used for noise prediction.In this paper,a baseline airfoil with a straight leading-edge and three bionic airfoils with tubercled leading-edges are simulated.The tubercles have sinusoidal profiles and the profiles are determined by the tubercle wavelength and ampli-tude.The tubercles used in this study have a fixed wavelength of 0.1c with three different amplitudes of 0.1c,0.15c and 0.2c,where c is the mean chord of the airfoil.The freestream velocity is set to 40 m/s and the chord based Reynolds number is 400,000.The predicted flow field and acoustic field of the baseline airfoil are compared against the experiments and good agreements are found.A considerable noise reduction level is achieved by the leading-edge tubercles and the tubercle with larger amplitude can obtain better noise reduction.The underlying flow mechanisms responsible for the noise reduction are analyzed in detail.
文献关键词：
中图分类号：
作者姓名：
Weijie Chen;Liangji Zhang;Liangfeng Wang;Zuojun Wei;Weiyang Qiao
作者机构：
School of Power and Energy,Northwestern Polytechnical University,Xi'an 710129,China;China Aerodynamics Research and Development Center,High Speed Aerodynamic Institute,Mianyang 621000,China;Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen 518055,China
文献出处：
引用格式：
[1]Weijie Chen;Liangji Zhang;Liangfeng Wang;Zuojun Wei;Weiyang Qiao-.Utilization of Whale-inspired Leading-edge Tubercles for Airfoil Noise Reduction)[J].仿生工程学报（英文版）,2022(05):1405-1421
A类：
Tubercles,Airfoil,humpback,flippers,airfoils,tubercled
B类：
Utilization,Whale,inspired,Leading,Noise,Reduction,Numerical,studies,conducted,explore,noise,reduction,effect,leading,tubercles,by,whale,Large,eddy,simulations,performed,solve,flow,field,while,acoustic,analogy,theory,used,prediction,In,this,paper,baseline,straight,three,bionic,edges,simulated,have,sinusoidal,profiles,determined,wavelength,study,fixed,1c,different,amplitudes,15c,2c,where,mean,chord,freestream,velocity,set,Reynolds,number,predicted,compared,against,experiments,good,agreements,found,considerable,level,achieved,larger,can,obtain,better,underlying,mechanisms,responsible,analyzed,detail
AB值：
0.476285
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