液压与气动2026，Vol.50Issue(6)：77-86,10.DOI:10.11832/j.issn.1000-4858.2026.06.009
高增压比喷射器喷嘴优化与试验
Optimization and Experiment of High-pressure-ratio Ejector Nozzle
摘要
Abstract
When boost pressure ratio exceeds 2.5,ejectors suffer flow fluctuations and instability.We use numerical simulation with entrainment coefficient as the index.It investigates the effects of key nozzle structural parameters on performance via single-factor analysis and response surface method.Results show that nozzle throat diameter and length both significantly affect internal flow and entrainment,with clear interaction.Throat diameter is the dominant factor.The optimal range is throat length 0.63～0.68 mm and throat diameter 6.42～6.52 mm.Verified by field tests,under high-pressure inlet of 44.97 MPa,the ejector entrains low-pressure inlet of 4.89 MPa and boosts it to pipeline pressure of 12.5 MPa,achieving a boost ratio of 2.6.This confirms the optimization's feasibility and engineering application.The results provide theoretical basis and engineering reference for ejector structure design.关键词
喷射器/数值模拟/引射系数/响应面法/结构优化Key words
ejector/numerical simulation/entrainment ratio/response surface methodology/structural optimization分类
机械制造引用本文复制引用
冯春宇,王锦涛,钟子仪,齐军,余泓佚,杨应强..高增压比喷射器喷嘴优化与试验[J].液压与气动,2026,50(6):77-86,10.基金项目
国家科技重大专项(2024ZD1401803) （2024ZD1401803）
