多孔喷嘴的瞬态氢气射流特性研究

武浩; 章振宇

doi:10.16236/j.cnki.nrjxb.202601004

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多孔喷嘴的瞬态氢气射流特性研究

更新时间：2026-02-13

- 多孔喷嘴的瞬态氢气射流特性研究
- 多孔喷嘴的瞬态氢气射流特性研究
- 内燃机学报 2026年44卷第1期页码：32-40
- 作者机构：
  
  1. 北京理工大学机械与车辆学院
  2. 阿卜杜拉国王科技大学清洁燃烧研究中心
- 作者简介：
- 基金信息：
  
  北京市自然科学基金资助项目（3242021）
- DOI：10.16236/j.cnki.nrjxb.202601004
  中图分类号： TK401
- 纸质出版：2026
- 稿件说明：
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武浩, 章振宇. 多孔喷嘴的瞬态氢气射流特性研究[J]. 内燃机学报, 2026,44(1):32-40.

武浩, 章振宇. 多孔喷嘴的瞬态氢气射流特性研究[J]. 2026, 44(1): 32-40.
武浩, 章振宇. 多孔喷嘴的瞬态氢气射流特性研究[J]. 内燃机学报, 2026,44(1):32-40. DOI： 10.16236/j.cnki.nrjxb.202601004.

武浩, 章振宇. 多孔喷嘴的瞬态氢气射流特性研究[J]. 2026, 44(1): 32-40. DOI： 10.16236/j.cnki.nrjxb.202601004.

摘要

采用无碳能源已成为实现碳中和，应对环境和气候危机的重要解决方案，旨在通过试验手段对多孔喷嘴的瞬态氢气射流特性进行表征．在定容弹内，采用HDEV5多孔喷油器实现氢气喷射．设置多组喷射压力(4～10 MPa)和环境压力(0.5～3.0 MPa)，以实现不同的喷射与环境压力比值，采用高速Z型纹影成像技术对氢气射流形态进行拍摄．结果表明：在20℃的试验温度下，射流的轴向贯穿距和投影面积随着喷射压力比的增加而增大．当压力比低于5.0时，氢气射流形态表现出一定的自相似特性．基于气体射流的自相似理论计算氢气射流贯穿距的比例关系，可以确定贯穿距常数为39.2．射流头部轮廓的曲率结果表明，更大的喷射压力比下导致射流更倾向于向外部扩散．

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