燃气-蒸汽弹射系统中二次燃烧及抑制机理

梁天水; 张冰; 宋逸凡; 贺丹娜; 王珩

doi:10.13224/j.cnki.jasp.20250555

燃气-蒸汽弹射系统中二次燃烧及抑制机理

doi: 10.13224/j.cnki.jasp.20250555

梁天水^1,,
张冰¹,
宋逸凡^1,*, ,,
贺丹娜^{2, 3, 4},
王珩^{2, 3, 4}

1.
郑州大学力学与安全工程学院，郑州 450001
2.
中国船舶集团有限公司第七一三研究所，郑州 450015
3.
河南省水下智能装备重点实验室，郑州 450015
4.
水下发射科学与技术中心，郑州 450015

基金项目: B0030项目（C6AB0030）；河南省自然科学基金（242300421226）

详细信息

作者简介:
梁天水（1981-），男，教授，博士，主要研究方向为计算流体力学仿真。E-mail：liangtsh@zzu.edu.cn

通讯作者:
宋逸凡（1993-），女，讲师，博士，主要研究方向为工业爆炸与防控及燃爆安全技术。E-mail：syfsyf@zzu.edu.cn

中图分类号: V231.2；V433.9
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- 文章访问数: 99
- HTML浏览量: 61
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- 被引次数: 0
出版历程
- 收稿日期: 2025-12-01
- 网络出版日期: 2026-02-27

Secondary combustion and inhibition mechanism in gas-steam ejection system

LIANG Tianshui^1
,,
ZHANG Bing¹,
SONG Yifan^{1,*
, ,},
HE Danna^{2, 3, 4},
WANG Heng^{2, 3, 4}

1.
School of Mechanical and Safety Engineering，Zhengzhou University，Zhengzhou 450001，China
2.
The 713 Research Institute of CSSC，Zhengzhou 450015，China
3.
Henan Key Laboratory of Underwater Intelligent Equipment，Zhengzhou 450015，China
4.
Center for Underwater Launch Science and Technology，Zhengzhou 450015，China

摘要

摘要:
基于燃气-蒸汽弹射系统1∶3缩比模型，采用数值模拟方法系统分析了发射筒内流场特性、二次燃烧现象及其抑制机理。结果表明：二次燃烧主要发生在发射筒内涡旋区与滞止区；低水雾燃气比条件下二次燃烧易发生；随着水雾量增加，蒸发吸热与自由基稀释作用增强，可有效延缓甚至抑制二次燃烧，但过高水雾量会导致系统温度下降并削弱做功能力。为兼顾抑制效果与发射性能，进一步研究了低水雾燃气比下含钾抑制剂的作用。结果显示：抑制剂引入后筒内平均OH质量分数降低约3个数量级，显著削弱了自由基活性，即使在低用量下亦能有效抑制二次燃烧。研究结果为燃气-蒸汽弹射系统的安全设计与工程应用提供了参考。
- 燃气-蒸汽弹射系统 /
- 二次燃烧 /
- 自由基 /
- 含钾抑制剂 /
- 物理化学抑制
Abstract:
Based on a 1∶3 scaled model of the gas-steam ejection system, this study systematically analyzes the in-tube flow characteristics, secondary combustion phenomena, and inhibition mechanisms using numerical simulations. The results indicate that secondary combustion primarily occurs in the vortex and stagnation zones inside the tube, and it is more likely to take place under low water-mist-to-gas ratios. As the amount of water mist increases, the effects of evaporation heat absorption and free radical dilution are enhanced, which can effectively delay or even suppress secondary combustion. However, excessive water mist leads to an over-decrease in temperature and weakens the system’s power output capability. To balance inhibition effectiveness and ejection performance, the effect of potassium-containing inhibitors under low water-mist-to-gas ratios was further investigated. The results show that after the introduction of the inhibitor, the average OH mass fraction inside the tube decreases by about three orders of magnitude, significantly weakening radical activity. Even with a small dosage, the inhibitor effectively suppresses secondary combustion. The findings provide theoretical and engineering references for the safe design and practical application of gas-steam ejection systems.
- gas-steam ejection system /
- secondary combustion /
- free radicals /
- potassium-containing inhibitor /
- physicochemical inhibition

HTML

图 1 燃气-蒸汽弹射装置三维模型结构图

Figure 1. Three-dimensional model structure diagram of gas-steam catapult tube

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图 2 网格模型

Figure 2. Mesh modeling

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图 3 化学机理验证

Figure 3. Validation of chemical mechanism

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图 4 含钾组分关键反应路径示意图

Figure 4. Key reaction pathways of potassium-containing components

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图 5 网格独立性验证

Figure 5. Verification of mesh independence

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图 6 工况2中轴面流场动态演化过程（流线图和马赫数云图）

Figure 6. Temporal evolution of the flow field on the central plane under Case 2 （streamlines and Mach number contours）

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图 7 模型中轴面示意图及关键分析区域标注

Figure 7. Schematic of the model’s central plane and identification of key analysis regions

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图 8 工况1至工况4筒内相对温度、相对压力、关键自由基OH及CO₂峰值随时间的变化曲线

Figure 8. Temporal variations of relative temperature, relative pressure, and key species （OH and CO₂） mass fractions inside the tube from Case 1 to Case 4

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图 9 二次燃烧触发前后筒内局部区域关键参数分布对比

Figure 9. Comparison of key parameter distributions in local regions before and after the onset of secondary combustion

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图 10 不同时刻弯管及发射筒内KOH质量分数与温度分布云图

Figure 10. Comparison of KOH mass fraction and temperature distribution at different times

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图 11 不同工况下动力弯管内蒸发率与相对温度随时间变化

Figure 11. Variations of evaporation rate and relative temperature with time in the power elbow under different working conditions

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图 12 工况3与工况4筒内OH质量分数（最大值与均值）随时间变化

Figure 12. Temporal evolution of maximum and average OH mass fractions inside the tube inside the tube for Case 3 and Case 4

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图 13 不同时刻工况4筒内局部区域H₂/KOH/OH质量分数云图以及温度分布云图

Figure 13. Contours of H₂/KOH/OH mass fractions and temperature distributions in local regions of the tube at different times under Case 4

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表 1 钾基组分参与的主要基元反应

Table 1. Key elementary reactions of potassium-based species

序号	化学反应	A	n	E_a
1	K+OH+M＝KOH+M	1.42×10¹⁸	0	0
2	KOH+H＝K+H₂O	1.79×10⁻¹¹	0	1 987
3	K+O₂+M＝KO₂+M	1.14×10²	−2.68	596
4	KO₂+H＝KO+OH	2.21×10¹²	0.5	0
5	KO+H＝K+OH	2.32×10⁻¹¹	1.97	571
6	KO+OH＝KOH+O	2.00×10¹³	0	0

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表 2 模拟工况参数汇总表

Table 2. Summary of simulation condition parameters

仿真工况	入口总压/MPa	筒内初压/MPa	水雾燃气比	是否添加含钾抑制剂
1	p₀	p₁	7.5ω	否
2	p₀	p₁	8ω	否
3	p₀	p₁	10ω	否
4	p₀	p₁	4ω	是

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