Numerical study and verification on combustion characteristics of afterburner with chevron mixer

DI Hu-wei; SHAN Yong; GAO Jia-chun; ZHANG Jing-zhou; LIU Tao

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Numerical study and verification on combustion characteristics of afterburner with chevron mixer

更新时间：2026-07-07

- Numerical study and verification on combustion characteristics of afterburner with chevron mixer
- Vol. 27, Issue 8, (2012)
- 作者机构：
  
  1. 南京航空航天大学能源与动力学院,南京,210016
  2. 中国航空工业集团公司沈阳发动机设计研究所,沈阳,110015
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2012
- 稿件说明：
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DI Hu-wei, SHAN Yong, GAO Jia-chun, et al. Numerical study and verification on combustion characteristics of afterburner with chevron mixer[J]. 2012, 27(8).
DOI：

DI Hu-wei, SHAN Yong, GAO Jia-chun, et al. Numerical study and verification on combustion characteristics of afterburner with chevron mixer[J]. 2012, 27(8). DOI：

摘要

基于CFD(computational fluid dynamics)技术

分别采用有限速率/涡耗散(finite-rate/eddy-dissipation)、涡耗散(eddy-dissipation)和涡耗散概念(EDC)燃烧模型

对一种曲面齿冠状混合器作用下的加力燃烧室进行数值计算.计算结果表明:曲面齿冠状混合器下游产生明显的流向涡对

流向涡的存在可以增强内外涵冷热气流掺混;与直面齿冠状混合器相比

曲面齿冠状混合器下游流向涡强度大于直面齿冠状混合器

其混合效率高于直面齿冠状混合器;加力燃烧室内氧气和二氧化碳质量分数分布结构表明了涡耗散模型的计算更为合理;计算结果可为加力燃烧室混合器选型和燃烧数值模拟提供依据.

Abstract

Based on computational fluid dynamics(CFD)

the two-phase turbulent combustion in a three-dimensional afterburner with a kind of curved chevron mixer was simulated.Eddy-dissipation

finite-rate/eddy-dissipation and eddy-dissipation-conception models were applied to the combustion simulation

respectively.Numerical results indicate that abundant streamwise vortices

which enhance the mixture between the core flow and bypass flow

form and develop along the downstream of the curved chevron mixer.The intensity of streamwise vortices deduced by curved chevron mixer always is greater than that of the straight chevron mixer.Therefore

the mixing efficiency of curved chevron mixer is the best.The eddy-dissipation model is the most realizable based on the distribution of O2 and CO2.

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