船用大侧斜螺旋桨的噪声计算与分析
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摘要
采用分离涡模型(DES)对伴流场中螺旋桨的轴承力进行数值计算,得到轴承力的时域值,通过傅里叶变换得到频域脉动值并分析了轴承力的频域特性。将桨叶表面压力脉动作为旋转偶极子声源,采用Virtual.Lab基于直接边界元方法计算了螺旋桨的无空泡噪声,分析了螺旋桨轴承力与噪声的关系以及噪声指向性。
Based on Detached Eddy Simulation(DES),bearing force of a five-blade highly skewed propeller in nonuniform flow field is calculated.The frequency-dependent bearing force fluctuation is obtained and analyzed by transforming time-dependent data.The pressure fluctuation is put as acoustic rotating dipole,then non-cavitation noise of the propeller is calculated by the method of direct boundary element method in acoustic software Virtual.Lab.The relation between propeller bearing force and its noise spectrum and directivity is explored.
Based on Detached Eddy Simulation(DES),bearing force of a five-blade highly skewed propeller in nonuniform flow field is calculated.The frequency-dependent bearing force fluctuation is obtained and analyzed by transforming time-dependent data.The pressure fluctuation is put as acoustic rotating dipole,then non-cavitation noise of the propeller is calculated by the method of direct boundary element method in acoustic software Virtual.Lab.The relation between propeller bearing force and its noise spectrum and directivity is explored.
引文
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[5]谢剑波,周其斗.非均匀流场中螺旋桨线谱噪声指向性分析[J].中国舰船研究,2010,5(6):6–11.XIE Jian-bo,ZHOU Qi-dou.Directivity prediction on tone noise of propeller operating in non-uniform flows[J].Chinese Journal of Ship Research,2010,5(6):6–11.
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[7]黄璐,陈立.螺旋桨建模方法及敞水性能研究[J].舰船电子工程,2014,34(8):78–88.HUANG Lu,CHEN Li.Research on modeling method of propeller[J].Ship Electronic Engineering,2014,34(8):78–88.
[8]王超.螺旋桨水动力性能、空泡及噪声性能的数值预报研究[D].哈尔滨:哈尔滨工程大学,2010.
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[2]苏玉民,窦凤祥,刘业宝,等.螺旋桨无空泡噪声的研究[J].武汉理工大学学报:交通科学与工程版,2013,37(5):895–899.Su Yu-min,DOU Feng-xiang,LIU Ye-bao,et al.Study of noncavitating propeller noise[J].Journal of Wuhan University of Technology(Transportation Science&Engineening),2013,37(5):895–899.
[3]王超,黄胜.螺旋桨噪声预报方法的综述[C]//黑龙江省造船工程学会2008年学术年会论文集,2008.
[4]赵小龙,熊鹰.预报螺旋桨噪声的方法[J].舰船科学技术,2005,27(2):42–45.ZHAO Xiao-long,XIONG Ying.The method of predicting propeller noise[J].Ship Science and Technology,2005,27(2):42–45.
[5]谢剑波,周其斗.非均匀流场中螺旋桨线谱噪声指向性分析[J].中国舰船研究,2010,5(6):6–11.XIE Jian-bo,ZHOU Qi-dou.Directivity prediction on tone noise of propeller operating in non-uniform flows[J].Chinese Journal of Ship Research,2010,5(6):6–11.
[6]KATO C.Applications of fully-resolved large eddy simulation to unsteady fluid flow and aeroacoustic preditions[C]//International Symposium on Turbulence and Shear Flow Phenomena,TSFP-7,Ottawa,Canada.
[7]黄璐,陈立.螺旋桨建模方法及敞水性能研究[J].舰船电子工程,2014,34(8):78–88.HUANG Lu,CHEN Li.Research on modeling method of propeller[J].Ship Electronic Engineering,2014,34(8):78–88.
[8]王超.螺旋桨水动力性能、空泡及噪声性能的数值预报研究[D].哈尔滨:哈尔滨工程大学,2010.
[9]LIGHTHILL M J.On sound generated aerodynamically.PartⅠ.General theory[M].Proc.R.Soc.London Ser.A211:564–587.
[10]FFOWCS WILLIAMS J E,HAWKINGS D L.Sound generation by turbulence and surfaces in arbitrary motion.[J].Philosophical Transactions of the Royal Society A Mathematical Physical and sengineering Sciences,1969,264(1151):321–342.