NUMERICAL PREDICTION OF BLADE FREQUENCY NOISE OF CAVITATING PROPELLER

作     者：YE Jin-ming XIONG Ying LI Fang WANG Zhan-zhi 

作者机构：College of Naval Architecture and Power Naval University of Engineering Wuhan 430033 China 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2012年第24卷第3期

页      面：371-377页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0706[理学-大气科学] 0802[工学-机械工程] 0701[理学-数学] 081201[工学-计算机系统结构] 0702[理学-物理学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.51009145) supported by the Research Foundation of the State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University(Grant Nos.0811,0904) the Research of Ministry of Education,Key Laboratory of High Speed Ship Engineering,Wuhan University of Technology(Grant No.HSSE1004) 

主　　题：propeller surface panel method cavitation noise time domain 

摘      要：The blade frequency noise of a cavitating propeller in a uniform flow is analyzed in the time domain. The unsteady loading （of a dipole source） and the sheet cavity volume （of a monopole source） on the propeller surface are calculated by a potential-based surface panel method. Then the time-dependent pressure and the cavity volume data are used as the input for the Fowcs Williams-Hawkings formulation to predict the acoustics pressure. The integration of the noise source is performed over the true blade surface rather than the ideal blade surface without thickness. The noise characteristics of the cavitating propeller are discussed. With the sheet cavitation, the thickness （cavitation） noise is larger than the loading noise and is the dominant noise source. The noise directivity is not as clear as that of the noise under a non-cavitation condition. The cavitation noise is attenuated more slowly than the non-cavitation noise.