| 涡轮叶栅前缘槽缝气膜冷却的数值模拟 |
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| 引用本文： | 王晓东,康顺.涡轮叶栅前缘槽缝气膜冷却的数值模拟[J].工程热物理学报,2008,29(11). |
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| 作者姓名： | 王晓东 康顺 |
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| 作者单位： | 华北电力大学电站设备状态检测与控制教育部重点实验室,北京,102206 |
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| 基金项目： | 国家自然科学基金
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| 摘 要： | 应用FINE/TURBO软件包,求解三维雷诺平均N-S方程,对叶片前缘有两列冷却槽缝的气膜冷却流场进行了数值模拟,获得了不同吹风比下叶片表面静压分布与极限流线.在计算结果与实验数据良好符合的基础上,详细分析了槽缝冷却三维定常流场结构与槽缝附近的流动细节.研究结果表明,槽缝冷却对前缘压力分布影响较大,且在压力面引起较大的分离流动,不利于冷却.
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| 关 键 词： | 气膜冷却 槽缝 数值模拟 吹风比 |
NUMERICAL SIMULATION ON THE SLOT FILM COOLING FIELD AT THE LEADING EDGE OF A TURBINE CASCADE |
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| WANG Xiao-Dong,KANG Shun.NUMERICAL SIMULATION ON THE SLOT FILM COOLING FIELD AT THE LEADING EDGE OF A TURBINE CASCADE[J].Journal of Engineering Thermophysics,2008,29(11). |
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| Authors: | WANG Xiao-Dong KANG Shun |
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| Institution: | WANG Xiao-Dong KANG Shun Key Laboratory of Power System Protection , Dynamic Security Monitoring , Control Ministry of Education,North China Electric Power University,Beijing 102206,China |
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| Abstract: | This paper presents a numerical investigation on the flow field in a turbine cascade with film cooling injections issued from slots at the blade leading edge, by using FINE/TURBO solving the Reynolds averaged Navier-Stokes equations, under various blowing ratios. The calculated static pressure and limiting streamline pattern on blade surfaces are well compared with the experiment results over a wide range. Base on the good validation, discussions are mainly focused on the 3D steady flow structures within a ... |
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| Keywords: | film cooling slot numerical simulation blowing ratio |
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