电磁力控制翼型水动力噪声机理及作用方式研究  

Mechanism of the electromagnetic force to control hydrodynamic noise from an airfoil model and its action mode

作　　者：刘永伟[1,2,3] 王璐 秦麒凯[1,2,3] 郑朋辉 商德江 LIU Yongwei;WANG Lu;QIN Qikai;ZHENG Penghui;SHANG Dejiang(National Key Laboratory of Underwater Acoustic Technology,Harbin Engineering University,Harbin 150001;Key Laboratory of Marine Information Acquisition and Security(Harbin Engineering University),Ministry of Industry and Information Technology,Harbin 150001;College of Underwater Acoustic Engineering,Harbin Engineering University,Harbin 150001)

机构地区：[1]哈尔滨工程大学水声技术全国重点实验室,哈尔滨150001 [2]工业和信息化部海洋信息获取与安全工信部重点实验室(哈尔滨工程大学),哈尔滨150001 [3]哈尔滨工程大学水声工程学院,哈尔滨150001

出　　处：《声学学报》2023年第6期1227-1239,共13页Acta Acustica

基　　金：水声技术重点实验室稳定支持项目(SSJSWDZC2018005);黑龙江省自然科学基金项目(JJ2019LH1082)资助。

摘　　要：提出了施加电磁力于边界层实现流动控制和降低水动力噪声的方法。对未施加与施加电磁力后翼型模型的流场与声场进行数值计算,结果表明:流向电磁力可延缓翼型表面的流动分离,抑制离散小涡生成,减弱翼型表面的湍流脉动压力,达到降低水动力噪声的目的。归纳了电磁力降低水动力噪声效果随雷诺数、攻角和电磁作用参数的变化规律,同时在循环水槽中对电磁力控制翼型水动力噪声的效果进行试验验证。由于转捩区是翼型模型的压力最小区域且面积非常有限,通过研究电磁力的作用方式,发现只在转捩区施加电磁力,即可达到最佳的降噪效果且减小了功耗,并分析了磁泄露带来的影响。研究结果为抑制翼型的水动力噪声提供了一种新的思路。A method is proposed to control the flow and reduce the hydrodynamic noise by applying the constant electromagnetic force into the boundary layer.The flow and sound fields from an airfoil model with and without the electromagnetic force are calculated.Results show that along the flow direction,electromagnetic force can delay the flow separation on the airfoil surface,suppress small discrete vortices,reduce turbulent fluctuation pressure on the airfoil surface,and decrease the hydrodynamic noise.The change law of the hydrodynamic noise effect reduced by the electromagnetic force is summarized in terms of the Reynolds number,attack angle,and electromagnetic effective parameters.Based on the numerical calculation results,an actual model is experimentally measured in the water circulating tank to validate the abovementioned effect.Since the transition area pressure of the airfoil model is the lowest and the area is limited,the application of electromagnetic force into this area can achieve the lowest noise effect.The power consumption decreases and the effect of the magnetic leak is analyzed.The results provide a new method for the suppression of hydrodynamic noise in airfoil models.

关 键 词：翼型模型 水动力噪声 电磁力 边界层分离 

分 类 号：U661.44[交通运输工程—船舶及航道工程]