华中科技大学学报（自然科学版）2024，Vol.52Issue(4)：100-105,6.DOI:10.13245/j.hust.240752
基于流动诱导噪声的喷水推进泵进水流道优化
Optimization of intake duct of water-jet pump based on flow induced noise
摘要
Abstract
To reduce the flow induced noise of water-jet pump,the intake duct structure was optimized by combining several parameters,including inclination angle of inclined straight pipe,lip fillet radius,total longitudinal length,transition bend radius and intake shape.The numerical calculation method for flow induced noise of water-jet pump was established based on detached eddy simulation and acoustic finite element method.The reliability of the numerical calculation method was verified by the experimental results.The hydrodynamic performances,pressure pulsation characteristics and flow induced noise characteristics of water-jet pump under different intake duct schemes were analyzed based on numerical calculation.Results show that the thrust increases by 0.103%,the torque increases by 7.7%,and the amplitude of pressure pulsation reduces as a whole under the optimal scheme.The amplitude of sound pressure level at the main frequency of flow induced noise decreases by 1.8 dB,and meanwhile the overall sound pressure level decreases by 1 dB at the whole frequency domain,when decreasing by 1.0 dB and 3.5 dB respectively at the middle and low frequency domain and the high frequency domain.关键词
喷水推进泵/进水流道/压力脉动/流动诱导噪声/优化Key words
water-jet pump/intake duct/pressure pulsation/flow induced noise/optimization分类
交通工程引用本文复制引用
谈明高,胡胜,吴贤芳,刘厚林..基于流动诱导噪声的喷水推进泵进水流道优化[J].华中科技大学学报（自然科学版）,2024,52(4):100-105,6.基金项目
国家自然科学基金资助项目(52179084,52379090). （52179084,52379090）
