| 入射角度对气膜冷却效果影响的数值研究 |
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| 引用本文： | 刘建红,历涛,李冬.入射角度对气膜冷却效果影响的数值研究[J].长春工程学院学报(自然科学版),2009,10(1):65-67. |
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| 作者姓名： | 刘建红 历涛 李冬 |
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| 作者单位： | [1]长春工程学院能源与动力学院,长春130012 [2]通钢集团通化钢铁公司,通化134000 [3]大唐集团长春第二热电厂,长春130000 |
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| 摘 要： | 采用RNGk-ε湍流模型对相同倾斜入射角不同扇形扩展角的气膜冷却单孔射流流场下游的流动和传热特性进行了详细的数值模拟,对相同吹风比下的冷却效率进行了比较分析。
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| 关 键 词： | 湍流模型 气膜冷却 数值模拟 扇形气膜孔 冷却效率 |
Numerical study on effects of jet angles on film-cooling effectiveness |
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| Institution: | LIU Jian-hong;et al.(Faculty of Energy ＆ Power;Changchun Institute of Technology;Changchun 130012;China) |
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| Abstract: | To investigate the flow and heat transfer characteristics downstream of jet issuing unmorally into a CrossFlow,using two different shape jet holes have been numerically simulated.The simulation is based on control volume method and RNG k-ε model.The film cooling effectiveness at the same jet-to-crossflow velocity ratio have been compared.The results suggest that： for a cone-shaped hole with γ to be 30°,streamwize angle α=30°,the film cooling effectiveness of velocity ratio M=0.7 was the highest,the ptimal jet-to-crossflow velocity ratio was M=0.5 for the round jet hole with streamwize angle α=30°,the round jet hole had a recooled the wall,the cone angle、streamwize angle and the reynolds were influence the film cooling effectiveness. |
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| Keywords: | turbulence models film cooling numerical simulation cone holes cooling effectiveness |
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