加力燃烧室一体化稳定器燃烧效率预测模型研究

赵昶; 刘玉英; 刘广海; 谢奕

doi:10.13224/j.cnki.jasp.20240845

加力燃烧室一体化稳定器燃烧效率预测模型研究

doi: 10.13224/j.cnki.jasp.20240845

北京航空航天大学能源与动力工程学院，北京 100191

基金项目: 国家科技重大专项（J2019-Ⅲ-0016-0060）

详细信息

作者简介:
赵昶（1999-），男，硕士生，主要从事航空发动机燃烧研究。E-mail：zy2204412@buaa.edu.cn

通讯作者:
刘玉英（1974-），女，教授，博士，主要从事发动机燃烧研究。E-mail：yyliu@buaa.edu.cn

中图分类号: V231.2
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出版历程
- 收稿日期: 2024-12-18
- 网络出版日期: 2025-03-07

Study on prediction model of combustion efficiency of integrated flameholder in afterburner

School of Energy and Power Engineering，Beihang University，Beijing 100191，China

摘要

摘要:
为了在一体化加力燃烧室长度设计阶段快速获取不同工况下一体化稳定器下游不同位置的燃烧效率，在来流温度为600～1250 K、来流速度为75～170 m/s和当量比0.08～0.16的条件下，以U型一体化火焰稳定器为研究对象，基于数值模拟研究与理论分析相结合的方法，确定了适用于一体化加力燃烧室的湍流脉动速度的经验预测公式，提出了加力燃烧室一体化稳定器沿程燃烧效率预测模型，并对预测模型进行了验证。结果表明：该模型预测误差在非燃油自燃工况下不超过4%，在燃油自燃工况下不超过12%。
- 加力燃烧室 /
- 一体化稳定器 /
- 燃烧效率 /
- 沿程 /
- 预测模型
Abstract:
In order to quickly obtain the combustion efficiency of different downstream positions of the integrated stabilizer under different conditions in the integrated afterburner length design stage, a prediction model of the combustion efficiency downstream the integrated flameholder in the afterburner was proposed and verified based on the combination of numerical simulation and theoretical analysis, under the conditions of 600—1250 K incoming flow temperature, 75—170 m/s incoming flow velocity and 0.08—0.16 equivalent ratio, taking U-shaped integrated flameholder as the research object. At the same time, the empirical prediction formula of turbulent pulsation velocity for an integrated afterburner was determined. It was found that the predicted error of the model was less than 4% in the non-fuel spontaneous combustion condition and less than 12% in the fuel spontaneous combustion condition.
- afterburner /
- integrated flameholder /
- combustion efficiency /
- along the downstream /
- prediction model

HTML

图 1 几何模型及计算域示意图（单位：mm）

Figure 1. Sketch of geometric model and computational domain （unit：mm）

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图 2 火焰扩张角α示意图

Figure 2. Schematic diagram of flame expansion angle α

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图 3 数值计算方法验证

Figure 3. Numerical calculation method verification

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图 4 燃油蒸发距离示意（z=0 mm）

Figure 4. Fuel evaporation distance indication （z=0 mm）

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图 5 沿程燃烧效率

Figure 5. Combustion efficiency along the flow

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图 6 稳定器喷油示意图

Figure 6. Diagram of the fuel injection flameholder

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图 7 不同速度下预测模型精度结果

Figure 7. Prediction model accuracy results under different velocities

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图 8 不同当量比下预测模型精度结果

Figure 8. Prediction model accuracy results under different equivalent ratios

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图 9 当量比对一体化稳定器出口温度及绝热火焰温度的影响

Figure 9. Effect of equivalent ratio on outlet temperature and adiabatic flame temperature of integrated flameholder

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图 10 不同温度下预测模型精度结果

Figure 10. Prediction model accuracy results under different temperatures

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图 11 一体化稳定器z=0 mm截面温度云图

Figure 11. Temperature cloud image of integrated stabilizerz=0 mm section

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表 1 火焰扩张角试验工况

Table 1. Experiment condition for flame spread angle

油气动量比Q	温度$ {T}_{\infty } $/K	马赫数$ M{a}_{\infty } $
28	1100	0.19
35
44
53
62

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表 2 燃烧效率试验结果与数值模拟结果的对比

Table 2. Verification of experimental combustion efficiency and numerical simulation results

$ {T}_{\infty } $/K	$ M{a}_{\infty } $	f	燃烧效率/%
$ {T}_{\infty } $/K	$ M{a}_{\infty } $	f	试验（η_e）	模拟（η_s）
803	0.20	0.00814	75.1	80.9
903	0.20	0.01387	78.1	87.4

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表 3 数值模拟工况

Table 3. Numerical simulation conditions

$ {T}_{\infty }/\mathrm{K}$	$ {V}_{\infty }/ （\mathrm{m}/\mathrm{s}） $	$ \phi $
800	100	0.08
900
1000

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表 4 数值模拟工况及湍动能结果

Table 4. Numerical simulation conditions and turbulence energy results

工况	$ {T}_{\infty }/\mathrm{K} $	$ {V}_{\infty }/ $ $ （\mathrm{m}/\mathrm{s}） $	$ \phi $	$ {K}_{\mathrm{m}\mathrm{a}\mathrm{x}} $/ $ （{\mathrm{m}}^{2}/{\mathrm{s}}^{2}） $	$ u' $/ （m/s）
1	600	75	0.16	416.9265	16.67
2	700	75	0.16	388.0896	16.08
3	800	75	0.16	376.2715	15.84
4	900	75	0.16	377.2546	15.86
5	900	100	0.16	655.2601	20.90
6	900	125	0.16	1022.042	26.10
7	900	150	0.16	1483.117	31.44
8	900	75	0.10	409.4398	16.52
9	900	75	0.12	398.6904	16.30
10	900	75	0.14	388.1390	16.09
11	800	100	0.08	756.5961	22.46
12	900	100	0.08	737.4782	22.17
13	1000	100	0.08	735.4965	22.14

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表 5 数值模拟工况

Table 5. Numerical simulation conditions

工况	$ {T}_{\infty }/\mathrm{K} $	$ {V}_{\infty }/ （\mathrm{m}/\mathrm{s}） $	$ \phi $
14	850	90	0.13
15	850	130	0.13
16	850	170	0.13
17	850	90	0.11
18	850	90	0.15
19	750	90	0.13
20	1050	90	0.13
21	1250	90	0.13

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表 6 一体化支板燃烧效率试验结果

Table 6. Combustion efficiency experiment results of integrated strut flameholder

$ {T}_{{\infty }} $/K	$ M{a}_{{\infty }} $	f	燃烧效率/%		e/%
$ {T}_{{\infty }} $/K	$ M{a}_{{\infty }} $	f	试验（$ {\eta }_{\mathrm{e}} $）	模型（$ {\eta }_{\mathrm{P}\mathrm{M}} $）	e/%
803	0.20	0.00814	75.13	77.67	2.54
903	0.20	0.01387	78.05	74.71	3.34

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