Analysis of film cooling effectiveness on antivortex hole

2011 International Conference on Consumer Electronics, Communications and Networks (CECNet) Pub Date : 2011-04-16 DOI:10.1109/CECNET.2011.5769060

M. K. Soe, Ding Ting, Wu Hong

{"title":"Analysis of film cooling effectiveness on antivortex hole","authors":"M. K. Soe, Ding Ting, Wu Hong","doi":"10.1109/CECNET.2011.5769060","DOIUrl":null,"url":null,"abstract":"This paper aims to mainly investigate the adiabatic film cooling effectiveness on different geometries of antivortex holes by numerical analysis. Antivortex film-cooling concept is designed to mitigate the effects of the counter-rotating vortex pair, which reduces the effectiveness of circular cross-section film-cooling holes at moderate to high blowing ratios. The 3D computational geometries are modeled with a single 30 deg angled hole on a flat surface. Numerical simulations have been performed at six different coolant-to-mainstream blowing ratios of 0.5, 1.0, 2.0, 3.0, 4.0, and 5.0, and used five different turbulence models; k-e, RNG k-e, SSG, SST, zero equation models to obtain detailed film cooling effectiveness. The single cylindrical hole is experimentally investigated in this research to confirm the certainty of numerical results of antivortex holes. Antivortex hole shows significantly improved 2D lateral spreading and spanwise averaged film-cooling effectiveness as compared to cylindrical hole due to the anti-vortex by side holes which reduced the detrimental vorticity produced by main hole.","PeriodicalId":375482,"journal":{"name":"2011 International Conference on Consumer Electronics, Communications and Networks (CECNet)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2011-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"10","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 International Conference on Consumer Electronics, Communications and Networks (CECNet)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CECNET.2011.5769060","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 10

Abstract

This paper aims to mainly investigate the adiabatic film cooling effectiveness on different geometries of antivortex holes by numerical analysis. Antivortex film-cooling concept is designed to mitigate the effects of the counter-rotating vortex pair, which reduces the effectiveness of circular cross-section film-cooling holes at moderate to high blowing ratios. The 3D computational geometries are modeled with a single 30 deg angled hole on a flat surface. Numerical simulations have been performed at six different coolant-to-mainstream blowing ratios of 0.5, 1.0, 2.0, 3.0, 4.0, and 5.0, and used five different turbulence models; k-e, RNG k-e, SSG, SST, zero equation models to obtain detailed film cooling effectiveness. The single cylindrical hole is experimentally investigated in this research to confirm the certainty of numerical results of antivortex holes. Antivortex hole shows significantly improved 2D lateral spreading and spanwise averaged film-cooling effectiveness as compared to cylindrical hole due to the anti-vortex by side holes which reduced the detrimental vorticity produced by main hole.

查看原文本刊更多论文

反涡孔气膜冷却效果分析

本文主要通过数值分析研究了不同几何形状的反涡孔对绝热膜的冷却效果。反涡气膜冷却的概念是为了减轻反旋转涡对的影响，它降低了圆形截面气膜冷却孔的有效性在中等至高吹风比。三维计算几何模型在平面上有一个30度角的孔。在冷却液与主流的吹气比分别为0.5、1.0、2.0、3.0、4.0和5.0的情况下进行了数值模拟，并使用了五种不同的湍流模型;k-e, RNG, k-e, SSG, SST，零方程模型，以获得详细的膜冷却效果。为了验证反涡孔数值计算结果的准确性，本文对单圆柱孔进行了实验研究。由于侧孔的抗涡作用降低了主孔产生的有害涡量，与圆柱孔相比，反涡孔的二维横向扩展和展向平均气膜冷却效果显著提高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2011 International Conference on Consumer Electronics, Communications and Networks (CECNet)

自引率

0.00%

发文量