Numerical Simulation of Flow and Emission Characteristics in Hydrogen-blended Combustion of Gas Turbines

ZHU Han; LI Li; ZHOU Leping; ZHANG Hui; ZHANG Runsheng; DU Xiaoze

doi:10.19805/j.cnki.jcspe.2026.250593

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Numerical Simulation of Flow and Emission Characteristics in Hydrogen-blended Combustion of Gas Turbines

更新时间：2026-10-06

- Numerical Simulation of Flow and Emission Characteristics in Hydrogen-blended Combustion of Gas Turbines
- Chinese Journal of Power Engineering Vol. 46, Issue 3, Pages: 1-9(2026)
- 作者机构：
  
  1. 华北电力大学能源动力与机械工程学院,北京,102206
  2. 华北电力大学电站能量传递转化与系统教育部重点实验室,北京,102206
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2026.250593
  CLC：
- Online First：10 March 2026，
  
  Published：10 March 2026
- 稿件说明：
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朱瀚,李莉,周乐平,张辉,张润生,杜小泽. 燃气轮机掺氢燃烧流动及排放特性数值模拟动力工程学报, 2026, 46(3): 1-9 https://doi.

org/10.19805/j.cnki.jcspe.2026.250593
朱瀚,李莉,周乐平,张辉,张润生,杜小泽. 燃气轮机掺氢燃烧流动及排放特性数值模拟动力工程学报, 2026, 46(3): 1-9 https://doi. DOI： 10.19805/j.cnki.jcspe.2026.250593.

org/10.19805/j.cnki.jcspe.2026.250593 DOI：

摘要

为响应国家"双碳"战略

燃气轮机掺氢燃烧技术成为重要发展方向。基于SST

湍流模型和非预混燃烧模型

采用数值模拟方法研究了某单管燃烧室在燃料喷射速度40~120 m/s和掺氢比0~20%条件下

掺氢天然气的流动和排放特性。结果表明:纯天然气和掺氢比20%工况下

燃烧室出口温度均在100 m/s时达到峰值后下降;燃料喷射速度超过100 m/s时

掺氢工况表现出更高的出口温度和更均匀的出口温度分布

但会破坏回流区

降低燃烧效率;CO排放量线性增加

排放量先增后减;综合分析得出最佳燃料喷射速度为80 m/s

此工况下掺氢20%与纯天然气燃烧相比可扩大回流区面积

延长燃料充分燃烧时间

同时CO

和CO排放量分别减少了14.8%和54.9%

但NO

排放量增加了64.1%

易引发燃烧不稳定现象。本研究为燃气轮机掺氢燃烧系统的优化设计提供了重要的理论支撑。

Abstract

In response to China's "dual carbon" strategy

hydrogen-blended combustion technology for gas turbines has become an important development direction. Based on the SST

k-ω

turbulence model and a non-premixed combustion model

the flow and emission characteristics of hydrogen-blended natural gas in a can-type combustor were numerically investigated under fuel inlet velocities ranging from 40 to 120 m/s and hydrogen blending ratios from 0 to 20%. Results show that for both pure natural gas and the 20% hydrogen-blended cases

the combustor outlet temperature peaks at 100 m/s before declining. When the inlet velocity exceeds 100 m/s

the hydrogen-blended cases exhibit higher outlet temperatures and a more uniform temperature distribution. However

the high velocity

disrupts the recirculation zone and reduces combustion efficiency. CO emissions increase linearly while CO

emissions first rise and then decrease. A comprehensive analysis identifies the optimal fuel inlet velocity as 80 m/s. Under this operating condition

compared to pure natural gas combustion

blending 20% hydrogen expands the recirculation zone area and extends the residence time for complete fuel combustion. Consequently

and CO emissions decrease by 14.8% and 54.9%

alongside a 64.1% increase in NO

emissions and an elevated risk of combustion instability. This research provides important theoretical support for optimizing hydrogen-blended combustion systems in gas turbines.

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references

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