| 复合角双射流气膜冷却的研究 |
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| 引用本文： | 王湛,刘建军,安柏涛,张超.复合角双射流气膜冷却的研究[J].热能动力工程,2011,26(5). |
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| 作者姓名： | 王湛 刘建军 安柏涛 张超 |
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| 作者单位： | 中国科学院工程热物理研究所,北京,100190 |
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| 基金项目： | 国家重点基础研究发展规划(973)基金资助项目(2007CB210108) |
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| 摘 要： | 采用数值模拟方法,研究了不同吹风比下孔排间距对复合角双射流气膜冷却特性的影响。结果表明,较小的孔排间距形成的反肾形涡为上下结构且不对称,冷却效果提高有限;而较大的孔排间距有利于形成左右对称的反肾形涡,能够在下游形成大面积的展向冷气覆盖,同时射流更好地贴附于壁面,大大提高了冷却效率;并将该结构应用到某重型燃气轮机静叶上,取得了良好的冷却效果。
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| 关 键 词： | 气膜冷却 双射流 孔排间距 反肾形涡 |
Study of the Air-film Cooling of a Dual-jet-flow with a Composite Angle |
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| WANG Zhan,LIU Jian-jun,AN Bai-tao,ZHANG Chao.Study of the Air-film Cooling of a Dual-jet-flow with a Composite Angle[J].Journal of Engineering for Thermal Energy and Power,2011,26(5). |
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| Authors: | WANG Zhan LIU Jian-jun AN Bai-tao ZHANG Chao |
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| Affiliation: | WANG Zhan,LIU Jian-jun,AN Bai-tao,ZHANG Chao(Engineering Thermophysics Research Institute,Chinese Academy of Sciences,Beijing,China,Post Code: 100190) |
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| Abstract: | By using a numerical simulation method,studied was the influence of the hole-row spacing on the air-film cooling characteristics of a dual jet flow with a composite angle at different air ratios.It has been found that the reverse kidney shaped vortex formed by a relatively small hole-row spacing is of a upper and lower structure and unsymmetrical and the improvement of the air-film cooling effectiveness is limited while a relatively large hole-row spacing is favorable for forming a right and left symmetrica... |
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| Keywords: | air-film cooling dual jet flow hole-row spacing reverse-kidney-shaped vortex |
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