李高翔1, 于贤君1, 胡海洋2(
), 王强2, 李一涵2, 陈一伟2
收稿日期:2025-10-29
修回日期:2025-11-25
接受日期:2025-12-30
出版日期:2026-01-16
发布日期:2026-01-15
通讯作者:
胡海洋
E-mail:09451@buaa.edu.cn
基金资助:
Gaoxiang LI1, Xianjun YU1, Haiyang HU2(
), Qiang WANG2, Yihan LI2, Yiwei CHEN2
Received:2025-10-29
Revised:2025-11-25
Accepted:2025-12-30
Online:2026-01-16
Published:2026-01-15
Contact:
Haiyang HU
E-mail:09451@buaa.edu.cn
Supported by:摘要:
发展了结合嵌入式大涡模拟(ELES)与大气透射率加权多组分宽带(ATWMSWB)k分布气体辐射模型的碳氢燃料排气系统红外特性数值计算软件ESTRI。并分别对比亚声速与超声速喷管尾流场参数分布测量数据、瞬态流场遥感红外成像逐线计算(LBL)结果,验证了ELES与ATWMSWB模型的可靠性。通过对小型航空发动机排气系统尾喷流积分辐射强度进行测量,并与数值计算结果对比,进一步验证了ESTRI软件对湍流燃气射流时均红外信号的计算精度。在此基础上数值研究了排气系统红外特性计算中常被忽视的3个因素:湍流与辐射相互干扰特性(TRI)、发动机吸入环境空气湿度、真实气体效应,对其3.7~4.8 μm波段红外信号的影响。结果表明,TRI特性对燃气喷流红外特性影响显著,且随探测距离的增加而略有增大;发动机吸入环境空气中的水蒸气对其尾喷流近距离红外信号的影响很小,但对其远距离红外信号的贡献可达1/3;真实气体效应对燃气喷流红外信号也有可见影响。
中图分类号:
李高翔, 于贤君, 胡海洋, 王强, 李一涵, 陈一伟. 考虑TRI效应影响的航发尾流红外特性数值研究[J]. 航空学报, 2026, 47(14): 132986.
Gaoxiang LI, Xianjun YU, Haiyang HU, Qiang WANG, Yihan LI, Yiwei CHEN. Numerical study on infrared characteristics of aero-engine exhaust plume considering TRI effects[J]. Acta Aeronautica et Astronautica Sinica, 2026, 47(14): 132986.
表5
各计算条件下尾喷流积分辐射强度
| 探测距离/m | 成像角度/(°) | 空气 类型 | 燃气类型 | TRI | 积分辐射强度/(W·sr-1) |
|---|---|---|---|---|---|
| 8 | 90 | 干空气 | 真实 | 无 | 1.25 (基于RANS) |
| 8 | 90 | 湿空气 | 真实 | 有 | 1.43(TRI占比33.53%) |
| 8 | 90 | 湿空气 | 真实 | 无 | 0.95 |
| 8 | 90 | 干空气 | 真实 | 有 | 1.41 |
| 8 | 90 | 湿空气 | 理想 | 有 | 1.35 |
| 400 | 90 | 湿空气 | 真实 | 有 | 0.142 2(TRI占比36.37%) |
| 400 | 90 | 湿空气 | 真实 | 无 | 0.09 |
| 400 | 90 | 干空气 | 真实 | 有 | 0.136 0 |
| 400 | 90 | 湿空气 | 理想 | 有 | 0.135 4 |
| 2×104 | 90 | 湿空气 | 真实 | 有 | 5.7×10-5(TRI占比38.51%) |
| 2×104 | 90 | 湿空气 | 真实 | 无 | 3.5×10-5 |
| 2×104 | 90 | 干空气 | 真实 | 有 | 3.8×10-5 |
| 2×104 | 90 | 湿空气 | 理想 | 有 | 5.4×10-5 |
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