Interaction Between Wake and Film Cooling Jets: Numerical Analysis

Interaction Between Wake and Film Cooling Jets: Numerical Analysis
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尾流和薄膜冷却喷射之间的相互作用：数值分析

DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
F. Martelli
F. Martelli
中科院分区：
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文献类型：
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作者：
P. Adami;F. Montomoli;E. Belardini;F. Martelli

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本文介绍了对气膜冷却涡轮叶片内三维非定常流场的数值研究结果。正在研究的叶片是在慕尼黑武装力量大学高速叶栅风洞的叶栅中研究的AGTB-B1。非定常流动由一个与叶片头部簇射头气膜冷却系统周期性相互作用的尾迹组成。本文讨论了气膜冷却叶片与叶栅上游平面上一排移动的杆条所产生的周期性尾迹之间的气动相互作用。预测方法是基于U-RANS CFD解算器，使用传统的两方程闭合。并结合实验数据对非定常CFD结果进行了讨论。特别强调了尾流与叶片喷头气膜冷却系统的非定常相互作用。版权所有©2004，ASME
The present work presents the results obtained from the numerical investigation of the 3D unsteady flow field in a film-cooled turbine vane. The blade under research is the AGTB-B1 investigated in the cascade of the High Speed Cascade Wind Tunnel of the University of Armed Forces Munich. The unsteady flow consists of a wake which periodically interacts with the shower-head film cooling system of the blade nose. The paper discusses the aerodynamical interaction between the film-cooled blade and the periodic wake produced by a moving row of bars placed in a plane upstream the cascade. The predictive approach is based on a U-RANS CFD solver using a conventional two-equation closure. The unsteady CFD results are discussed against the experimental data available. Special emphasis is devoted to the unsteady interaction of the wake with the shower-head film-cooling system of the blade.Copyright © 2004 by ASME