哈尔滨工程大学学报2024，Vol.45Issue(7)：1288-1296,9.DOI:10.11990/jheu.202207050
巡航状态下泵喷推进潜艇流场与声场特性研究
Characteristic research on the flow and sound fields of the pump-jet-propelled submarine under cruising conditions
摘要
Abstract
To determine the flow and sound field distribution laws of a pump-jet-propelled submarine under cruising conditions,the unsteady numerical calculation of the entire basin was conducted based on the detached eddy simu-lation turbulence model,and the acoustic FEM was used to predict the flow-induced noise.Test noise and thrust information were analyzed using the hydrophone and thrust acquisition system in a circulating water channel.Re-sults showed that the influence of the external flow field on the jet flow field at the tail of the pump jet decreases gradually with the increase in the speed of the ship,and a blockage is detected in the local area of the pump-jet propulsor.The impeller-induced noise is the most important source of hydrodynamic noise.The frequency spectrum characteristics of impeller noise are similar to those of pressure pulsation in the flow field.The SPL caused by pres-sure fluctuation on the flow wall has a dipole symmetry distribution on the meridian plane,whereas the noise distri-bution of the quadrupole jet has a certain uniformity on the sagittal plane.Moreover,a maximum is detected along the jet flow direction on the meridian plane.This study reveals the complex flow processes and the distribution laws of various flow-induced noises under cruising conditions,which provide a certain theoretical basis and technical support for the design and performance optimization of the pump-jet propeller with high efficiency and low noise.关键词
泵喷推进潜艇/流场特性/声场特性/巡航状态/喷流/声学有限元Key words
pump-jet-propelled submarine/flow field characteristics/sound field characteristics/cruise condition/jet flow/acoustic FEM分类
交通工程引用本文复制引用
郭荣,李舟睿,张人会,王乾年,李仁年..巡航状态下泵喷推进潜艇流场与声场特性研究[J].哈尔滨工程大学学报,2024,45(7):1288-1296,9.基金项目
国家自然科学基金项目(52009050) （52009050）
中国博士后科学基金项目(2020M673537) （2020M673537）
甘肃省自然科学基金项目(20JR10RA172). （20JR10RA172）
