摘要
针对跨声速风扇/压气机级中静子的设计来流速度都为亚声速的现状,通过数值模拟比较了不同气动负荷的4组单级风扇,认为静子来流的跨声速现象是提高跨声速风扇/压气机级气动负荷的必然结果.模拟结果还表明,当来流马赫数不超过1.33时,不采用附面层主动控制而通过已有的设计手段可以有效地控制分离区,将跨声速来流造成的静子损失控制在适当的范围.进而对跨声速静子作出了明确定义,提出了完全跨声速风扇/压气机级的概念,认为完全跨声速风扇/压气机级的设计准则与经典设计准则至少有2点不同:静子轮毂区来流马赫数可以大于1.0;静子轮毂区的扩散因子上限为0.53.
The inlet flow of transonic fan/compressor stator is subsonic. Four groups of single fan stage projects with different aerodynamic load are investigated by comparative numerical analysis. It is considered that as the improvement of aerodynamic load of the transonic fan/compressor, the transonic flow in stator inlet becomes unavoidable. The results also suggest that active flow control gets unnecessary, the existing design methods are capable of diminishing the separated region, and the stator loss produced by transonic flow can be controlled on an acceptable level, unless the inlet Ma〉1. 33. The explicit conceptions of transonic stator and the integral transonic fan/compressor stage are defined respectively. At least two differences in fan/compressor design between the transonic and the conventional methods can be summarized： the inlet Ma of stator hub is allowed to be higher than 1.0; the diffusion factor of stator hub ought to be limited below 0. 53.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2008年第7期895-899,共5页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金资助项目(10577022)
