| 带冲击的两相气膜冷却特性数值模拟 |
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| 引用本文： | 王利峰,朱惠人,郭文.带冲击的两相气膜冷却特性数值模拟[J].燃气涡轮试验与研究,2006,19(4):43-47. |
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| 作者姓名： | 王利峰 朱惠人 郭文 |
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| 作者单位： | 1. 西北工业大学,动力与能源学院,陕西,西安,710072
2. 中国燃气涡轮研究院,四川,成都,610500 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 用数值模拟方法研究了带冲击的气膜冷却系统的流场结构，示出了气流和冲击腔内的螺旋流动、气膜孔下游的肺状低压区、横截而对称双漩涡以及由双漩涡形成的交叉双锥形水蒸气体积分数等值面。比较了体积分数为0．5的水蒸气膜与纯空气膜的冷却效率，得到水蒸气膜平均冷却效率高于空气膜。在x=3d处高出31．6％。在x=26d处高山19％。水蒸气膜与空气膜相比换热系数变化不大。
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| 关 键 词： | 冲击 气膜冷却 两相 水蒸气 数值仿真 |
| 文章编号： | 1672-2620(2006)04-0043-05 |
| 收稿时间： | 06 29 2006 12:00AM |
| 修稿时间： | 10 10 2006 12:00AM |
Numerical Simulation of Impingement Film Cooling |
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| WANG Li-feng,ZHU Hui-ren,GUO Wen.Numerical Simulation of Impingement Film Cooling[J].Gas Turbine Experiment and Research,2006,19(4):43-47. |
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| Authors: | WANG Li-feng ZHU Hui-ren GUO Wen |
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| Abstract: | Flow field of impingement film cooling was investigated by numerical simulation.Helix airflow in the impingement cavity,the lung shape meiobar,symmetrical swirls in the cross section of film airflow and the sequenced intersectional double-cones shaped surface of constant volume fraction of vapor were displayed.Comparison of film cooling effectiveness between air that contains 50% vapor in volume and pure air was made.The result showed that the average cooling effectiveness of vapor was higher than pure air,at x=3d the value was 31.6%,at x=26d the value was 19%.The heat transfer coefficient changed little. |
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| Keywords: | impingement fihn cooling two phase vapor numerical simulation |
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