Experimental and numerical investigations to extend the validity range of a turbine loss correlation for ultra-low aspect ratios in transonic flow
Experimental and numerical investigations to extend the validity range of a turbine loss correlation for ultra-low aspect ratios in transonic flow
复制标题
通过实验和数值研究来扩展跨音速流中超低展弦比涡轮机损失相关性的有效性范围
DOI：
--
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
M. H. E. Goldhahn
中科院分区：
文献类型：
--
作者：
K. Beschorner;M. H. E. Goldhahn
本文提出的研究目标是开发超低展弦比涡轮叶片的损失相关性，并在跨音速流态中有效。一组公共相关性已被用作有效性范围扩展的基础。相关开发的数据库是根据 3D CFD 计算的结果创建的。该数值模型已通过采用气动和光学测量方法的新设计的跨音速测试台的实验研究得到验证。计算结果与测量级联结果之间的比较显示出良好的一致性。最后，本文将对整套相关性进行必要的修改，以满足 CFD 数据库计算的损失系数。
The target of the investigation presented in this paper was to develop a loss correlation for ultra-low aspect ratio turbine blades, with validity in the transonic flow regime. A set of public correlations has been used as a basis for the validity range extension. The database for the correlation development has been created by the results of 3D CFD computations. The numerical model has been validated by experimental investigations in a newly designed transonic testrig with pneumatic and optical measurement methods. The comparison between the computed and the measured cascade results showed good conformance. Finally the paper will present the necessary modifications to the complete set of correlations to meet the computed loss coefficients of the CFD database.