Numerical investigation of combination of direct mixing combustion and LPP combustor

LIU Qiang; SUO Jian-qin; LIANG Hong-xia; LI Ming; Li Han

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Numerical investigation of combination of direct mixing combustion and LPP combustor

更新时间：2026-07-07

- Numerical investigation of combination of direct mixing combustion and LPP combustor
- Vol. 27, Issue 11, (2012)
- 作者机构：
  
  西北工业大学动力与能源学院,西安,710072
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2012
- 稿件说明：
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LIU Qiang, SUO Jian-qin, LIANG Hong-xia, et al. Numerical investigation of combination of direct mixing combustion and LPP combustor[J]. 2012, 27(11).
DOI：

LIU Qiang, SUO Jian-qin, LIANG Hong-xia, et al. Numerical investigation of combination of direct mixing combustion and LPP combustor[J]. 2012, 27(11). DOI：

摘要

设计了直混燃烧与贫油预混预蒸发(LPP)组合的单管燃烧室.燃烧室头部采用同轴同旋向主模旋流器和副模旋流器结构

主、副油路分别采用直射式喷嘴和压力雾化喷嘴

可以在单管燃烧室上掌握和实现低污染燃烧排放控制技术

并采用Fluent软件对设计的单管燃烧室模型进行数值模拟.计算结果表明:主副模燃烧区相互独立;副模是直混燃烧

主要作用稳定火焰.主模是预混燃烧

燃烧区温度分布均匀

从而实现低NOx排放.解决了大工况下低NOx排放与慢车贫油熄火之间的矛盾.

Abstract

A combination of direct mixing combustion and lean premixed prevaporized(LPP) single-module tubular combustor was designed.Numerical investigation of the combustor was conducted with software fluent.The results show that main flame zone is independent from pilot flame zone;pilot module operates as a direct mixing flame for anchoring main flame.Main module operates as a premixed flame

providing a uniform temperature distribution in combustion zone

which reduces NOx emissions.The contradiction was solved between the low NOx emissions at high power conditions and flame stabilization at low power conditions.

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