华中科技大学学报（自然科学版）2024，Vol.52Issue(10)：92-97,6.DOI:10.13245/j.hust.240487
喷水推进泵内精细流场测试研究
Test study of delicate flow field in waterjet propulsion pump
摘要
Abstract
To study the complex delicate flow field structure in the waterjet propulsion pump,the particle image velocimeter(PIV)technology was adopted for a typical waterjet propulsion pump model to measure the velocity field in the inlet section,the impeller channel,the guide channel and the guide vane outlet.After image processing and analysis,the velocity field and flow field structure of different positions were obtained,and the proper orthogonal decomposition(POD)method was used to analyze the energy of the velocity field at the guide vane outlet.Results show that the repeatability deviation of the guide vane outlet velocity field is 1.66%,which indicates the repeatability accuracy of the test method is relatively high.Under the small flow condition,the radial velocity component from the hub to the tip of the impeller flow path exists and the pulse velocity increases.Under the designed flow rate,the secondary flow and the pulsation velocity decrease,and the flow field tends to be uniform.The internal flow field of the guide vane is affected by the outflow of the impeller.Under the small flow rate and the designed flow condition,the energy ratio of the first and second order mode is 4.2%,3.8%,and 5.2%,2.6%,respectively.关键词
喷水推进/精细流场/测试/粒子图像测速/本征正交分解Key words
waterjet propulsion/delicate flow field/test/particle image velocimetry/proper orthogonal decomposition分类
交通工程引用本文复制引用
王俊,范佘明,蔡佑林,朱华伦..喷水推进泵内精细流场测试研究[J].华中科技大学学报（自然科学版）,2024,52(10):92-97,6.基金项目
基础加强计划重点研究项目(MKS20210003). （MKS20210003）
