流体机械2023，Vol.51Issue(11)：63-70,8.DOI:10.3969/j.issn.1005-0329.2023.11.010
射流泵喉管结构优化及模型放缩机理研究
Numerical simulation of throat structure optimization of jet pump and exploration of model contraction mechanism
摘要
Abstract
For the problem of low pumping efficiency of jet pumps,coupling between the jet pump throat inclination and length ratio and its effect on pumping efficiency through numerical calculations.A mathematical model of the jet process was developed and validated in this study and used to carry out theoretical calculations of the pumping process for 16 groups of jet pumps with different throat inclinations and throat lengths.The results show that:first,the parameter values of the numerical calculation results and experimental results are verified in three dimensions:motion similarity,dynamic similarity and flow similarity,and the error is only 2.8%.Second,under the premise of the traditional length ratio,only a 3%improvement can be obtained by changing the inclination of the throat.Third,the linkage design of the inclination angle and length ratio of the throat can bring 13%improvement in pumping efficiency and save 28.6%of consumables.Fourth,the combination of the Froude number and the Craya-Curtet number can be used instead of the Reynolds number to solve the equivalent dynamic parameters of the jet pump at different scales,and the method has an accuracy of 97.2%.In conclusion,the optimisation of the characteristic structure of the jet pump can bring high economic benefits and has good engineering application prospects and promotion value.关键词
放缩机理/喉管倾角/喉管长度比/CFDKey words
scaling mechanism/throat inclination/throat length ratio/CFD分类
机械制造引用本文复制引用
孙琬婷,李民..射流泵喉管结构优化及模型放缩机理研究[J].流体机械,2023,51(11):63-70,8.基金项目
云南省重大科技项目(202202AG050002) （202202AG050002）
