Numerical Simulation of Effect of Hole Displacement on Heat Transfer Characteristics of an Effusion Cooled Flame Tube

Journal of Propulsion Technology ›› 2013, Vol. 34 ›› Issue (5): 638-643.

• Combustion , Heat and Mass Transfer • Previous Articles Next Articles

Numerical Simulation of Effect of Hole Displacement on Heat Transfer Characteristics of an Effusion Cooled Flame Tube

College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Published:2021-08-15

孔排布方式对多斜孔壁火焰筒传热特性影响的数值研究

胡娅萍¹,吉洪湖¹,郑妹^1,2,张勃¹

南京航空航天大学能源与动力学院,江苏南京 210016;南京航空航天大学能源与动力学院,江苏南京 210016;南京航空航天大学能源与动力学院,江苏南京 210016;南京航空航天大学能源与动力学院,江苏南京 210016

作者简介:胡娅萍(1978—),女,博士,讲师,研究领域为航空发动机热端部件冷却技术。 E-mail:huyaping_hh@yahoo.com.cn

Abstract

Abstract: To investigate effective cooling method, effusion-cooling was applied in combustion chamber flame tube. The heat transfer characteristics of three effusion cooling structures under actual conditions were studied. The effects of different circumferential array displacement H to circumferential spacing p of holes array(model A:H/p=0.2；model B: H/p=0.4；model C:H/p=0.5)on the cooling characteristics were investigated. The computation results show H/p has little effect on the total flow rate of cooling air but an obvious effect on heat transfer characteristics. The cooling effectiveness of model C is higher than that of model A and B and the outlet temperature distribution factor ε on the outlet of flame tube is the smallest.

Key words: Effusion cooling; Hole displacement; Flame tube; Combustion chamber

摘要： 为了探寻高效的冷却技术,将多斜孔壁冷却结构应用于燃烧室火焰筒中,在实际工作条件下,对三种孔排布方式的火焰筒冷却特性进行了数值模拟。研究了斜排孔阵的周向偏移量H相对周向孔间距p的变化(模型A:H/p=0.2；模型B:H /p=0.4；模型C:H/p=0.5)对冷却特性的影响。计算结果表明,在燃烧室进口条件相同时,H/p的变化对总冷却用气量的影响很小,但对火焰筒的传热特性有明显影响,模型C的冷却效果优于模型A和B,并且火焰筒出口的温度分布不均匀系数ε较小。 

关键词: 多斜孔壁冷却;孔排布;火焰筒;燃烧室 

HU Ya-ping¹, JI Hong-hu¹, ZHENG Mei^1,2, ZHANG Bo¹. Numerical Simulation of Effect of Hole Displacement on Heat Transfer Characteristics of an Effusion Cooled Flame Tube[J]. Journal of Propulsion Technology, 2013, 34(5): 638-643.

胡娅萍,吉洪湖,郑妹,张勃. 孔排布方式对多斜孔壁火焰筒传热特性影响的数值研究[J]. 推进技术, 2013, 34(5): 638-643.

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Numerical Simulation of Effect of Hole Displacement on Heat Transfer Characteristics of an Effusion Cooled Flame Tube

孔排布方式对多斜孔壁火焰筒传热特性影响的数值研究

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