Effects of throat geometry on micro nozzle's performance

TONG Jun-jie; XU Jin-liang; LI Yu-xiu; CEN Ji-wen

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Effects of throat geometry on micro nozzle's performance

更新时间：2026-07-07

- Effects of throat geometry on micro nozzle's performance
- Vol. 24, Issue 5, (2009)
- 作者机构：
  
  1. 中国科学院广州能源研究所微能源系统实验室,广州,510640
  2. 广东海洋大学工程学院,湛江,524006
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2009
- 稿件说明：
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TONG Jun-jie, XU Jin-liang, LI Yu-xiu, et al. Effects of throat geometry on micro nozzle's performance[J]. 2009, 24(5).
DOI：

TONG Jun-jie, XU Jin-liang, LI Yu-xiu, et al. Effects of throat geometry on micro nozzle's performance[J]. 2009, 24(5). DOI：

摘要

以FLUENT6.1为工具

利用数值计算求解二维稳态可压缩N-S方程

模拟了喉部有无圆弧过渡以及不同的喉部曲率半径对扩张比为5.4的收缩-扩张微喷管x方向质量流速和总压力影响

进而研究了对微喷管的流量系数和推力效率影响.数值计算结果表明:喉部有无圆弧过渡以及不同的喉部曲率半径

将会影响微喷管出口处x方向的质量流速和总压力分布

随着微喷管喉部特征雷诺数的增大

相对应微喷管最大流量和推力的微喷管喉部曲率半径也相应增加.

Abstract

The FLUENT6.1 software was applied to simulate the supersonic flow in micro convergent-divergent nozzle with 5.4 expansion ratios.The simulation was complemented by computing steady two-dimensional Navier-Stokes equations to study the effect of mass x velocity and total pressure from throat

which has arc or not and different throat arc radius.Also

the fluent mass and thrust force effects were studied.It is observed by the study that x orientation mass velocity of thrust exit and thrust force are effected by the throat which has arc or not and throat arc radius.With the increase of throat Reynolds

the corresponding throat radius for the maximal fluent mass and thrust force increases accordingly.

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