非均匀来流条件下螺旋桨诱导的脉动压力变化特性试验研究
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摘要
为了研究螺旋桨诱导的脉动压力随进速系数的变化特性,采用压力传感器和LMSTest.Lab采集系统,对非均匀来流条件下七叶大侧斜螺旋桨和三叶常规螺旋桨诱导的脉动压力进行了试验研究。结果表明,七叶大侧斜螺旋桨脉动压力的前四阶叶频谐调分量及三叶常规螺旋桨脉动压力的前两阶叶频谐调分量均随进速系数的增大先减小后增大,两螺旋桨叶频谐调分量最小值所对应的进速系数分别为1.1和0.85左右,而三叶常规螺旋桨诱导的脉动压力的三阶和四阶叶频谐调分量随进速系数的增大整体呈现出逐渐增大的变化趋势;通过数学回归分析方法研究,七叶大侧斜螺旋桨和三叶常规螺旋桨诱导的脉动压力一阶叶频谐调分量与进速系数均呈二次函数变化关系。
In order to investigate the variation characteristics of the pressure fluctuations induced by a propellerwith change of the advance coefficient,the pressure sensor and LMS Test.Lab acquisition system are employed while the pressure fluctuations are experimentally studied on a 7-blade high-skewed propeller and a 3-blade conventional propeller innon-uniform flow.The results show that the first four orders of the blade frequency humorous components of the pressure fluctuations induced by the 7-blade high-skewed propeller and the first two orders of the blade frequency humorous components of the pressure fluctuations induced by the 3-blade conventional propeller decrease first and then increases with the growth of the advance coefficient.The advance coefficients corresponding to the minimum value of the blade frequency humorous components of the two propellers are approximately 1.1 and 0.85,respectively.For the 3-blade conventional propeller,the third order and the fourth order of the blade frequency humorous components of the pressure fluctuations presents a gradually increasing variation trend when the advance coefficient increases.Through mathematical regression analysis,the first order of the blade frequency humorous components corresponding to the 7-blade high-skewed propeller and the 3-blade conventional propeller have quadratic functional relations with the advance coefficient.
In order to investigate the variation characteristics of the pressure fluctuations induced by a propellerwith change of the advance coefficient,the pressure sensor and LMS Test.Lab acquisition system are employed while the pressure fluctuations are experimentally studied on a 7-blade high-skewed propeller and a 3-blade conventional propeller innon-uniform flow.The results show that the first four orders of the blade frequency humorous components of the pressure fluctuations induced by the 7-blade high-skewed propeller and the first two orders of the blade frequency humorous components of the pressure fluctuations induced by the 3-blade conventional propeller decrease first and then increases with the growth of the advance coefficient.The advance coefficients corresponding to the minimum value of the blade frequency humorous components of the two propellers are approximately 1.1 and 0.85,respectively.For the 3-blade conventional propeller,the third order and the fourth order of the blade frequency humorous components of the pressure fluctuations presents a gradually increasing variation trend when the advance coefficient increases.Through mathematical regression analysis,the first order of the blade frequency humorous components corresponding to the 7-blade high-skewed propeller and the 3-blade conventional propeller have quadratic functional relations with the advance coefficient.
引文
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[17]Young Z K,Jui H K.Underwater Acoustic Field and Pressure Fluctuation on Ship Hull Due to Unsteady Propeller Sheet Cavitation[J].Journal of Marine Science and Technology,2011,16(3):241-253.
[18]盛立,熊鹰,王松.空泡水洞中拖式吊舱推进器脉动压力测量及空泡观测[J].舰船科学技术,2012,34(2):30-35.
[19]尹军飞,王瑞琪,彭成一.应用LDV研究二元管道内分离流动[J].推进技术,1993,14(2):47-52.(YIN Jun-fei,WANG Rui-qi,PENG Cheng-yi.Application of LDV in Investigation on Separating Flow in a 2-D Channel[J].Journal of Propulsion Technology,1993,14(2):47-52.)
[2]吴梵,郭日修.舰船尾部振动研究的回顾[J].船舶力学,1998,2(1):69-75.
[3]陈达权.螺旋桨激振力(脉动压力)的测定方法[J].上海船舶运输科学研究所学报,1980,(2):23-36.
[4]舒敏骅,陈科,尤云祥,等.外部轴向激励作用下螺旋桨轴承力非定常变化特性数值研究[J].推进技术,2017,38(4).(SHU Min-hua,CHEN Ke,YOU Yun-xiang,et al.Numerical Study on the Unsteady Variation Characteristics for the Bearing Forces of a Propeller with External Axial-Excitation[J].Journal of Propulsion Technology,2017,38(4).)
[5]Bin Ji,Xianwu Luo,Xiaoxing Peng,et al.Numerical Analysis of Cavitation Evolution and Excited Pressure Fluctuation around a Propeller in Non-Uniform Wake[J].International Journal of Multiphase Flow,2012,43:13-21.
[6]叶金铭,雄鹰,孙海涛,等.空泡螺旋桨诱导的双桨船脉动压力数值预报[J].哈尔滨工程大学学报,2013,34(5):568-574.
[7]张志荣,朱建良,赵峰,等.减压拖曳水池中螺旋桨空泡诱导的船体脉动压力测量方法研究[J].船舶力学,2001,5(4):1-6.
[8]伍锐,季盛,陈洋.不同空气含量下螺旋桨激振力预报的试验研究[C].成都:第九届全国水动力学学术会议,2009.
[9]伍锐,季盛,沈浩,等.螺旋桨诱导船体表面脉动压力预报的试验研究[J].交通部上海船舶运输科学研究所学报,2011,34(1):15-20.
[10]伍锐,季盛,沈浩,等.船模伴流场修正对螺旋桨激振力预报的影响[J].上海船舶运输科学研究所学报,2009,32(2):10-15.
[11]Lee JH,Han JM,Park HG,et al.Improvements of Model-Test Method for Cavitation-Induced Pressure Fluctuation in Marine Propeller[J].Journal of Hydrodynamics,2013,25(4):599-605.
[12]叶永兴,杨昌培,刘绍宗.大型集装箱船上大侧斜螺旋桨模型脉动压力的比较试验研究[J].水动力学研究与进展(A辑),1996,1(1):535-540.
[13]郭永松,胡天群,陈洋,等.普通螺旋桨和大侧斜螺旋桨在两个特定流场中的脉动压力试验研究[J].上海船舶运输科学研究所学报,1991,14(2):17-33.
[14]郭永松,明眸.螺旋桨叶梢与船体表面的间隙大小对船体诱导激振力的影响试验[J].上海海事大学学报,2007,28(1):156-159.
[15]Fang Lu,Enbao Ding,Gongzheng Xin,et al.Activities of Propulsion Design and Cavitation Test for Merchant Ships in CSSRC[J].Journal of Ship Mechanics,2012,16(12):1367-1372.
[16]Bosschers J.Investigation of Hull Pressure Fluctuations Generated by Cavitating Vortices[C].Trondheim:First Internationl Symposium on Marine Propulsors Smp’09,2009.
[17]Young Z K,Jui H K.Underwater Acoustic Field and Pressure Fluctuation on Ship Hull Due to Unsteady Propeller Sheet Cavitation[J].Journal of Marine Science and Technology,2011,16(3):241-253.
[18]盛立,熊鹰,王松.空泡水洞中拖式吊舱推进器脉动压力测量及空泡观测[J].舰船科学技术,2012,34(2):30-35.
[19]尹军飞,王瑞琪,彭成一.应用LDV研究二元管道内分离流动[J].推进技术,1993,14(2):47-52.(YIN Jun-fei,WANG Rui-qi,PENG Cheng-yi.Application of LDV in Investigation on Separating Flow in a 2-D Channel[J].Journal of Propulsion Technology,1993,14(2):47-52.)