摘要
大小叶片、串列叶片这两类非常规压气机负荷能力是备受研究者关注的重要问题。本文根据Scbweitzer叶栅负荷能力经验关系,在对大小叶片、串列叶片简化为前后两排等效叶片以及流动不可压、忽略雷诺数、来流附面层厚度等影响因素的假设下,给出了这两类非常规压气机构型负荷能力的评估关系。分析表明,相同总展弦比条件下,前述三类构型压气机的压升(负荷)能力由小到大顺序为常规叶片、大小叶片、串列叶片;而如果放开展弦比的工程选择,则常规叶片负荷能力未必不如大小叶片和串列叶片,但这并不妨碍大小叶片和串列叶片作为压气机构型的重要选择。
The load capacity of two types of unconventional compressor,i.e.,with splittered blade and tandem blade,is an important problem.Based on Schweitzer's empirical relationship on the load capacity of cascades,an assessment on load capacity of these two types of unconventional compressor configuration was obtained along with conventional one.This was done under a series of assumptions that include simplifying the splittered blade and tandem blade as two rows of equivalent blades,idealizing the flow field as incompressible flow and ignoring the influence of Reynolds number and boundary layer thickness.The results show that the ascending order in load capacity of the three types of compressor configurations is conventional blade,splittered blade and tandem blade with the same total aspect ratio.Otherwise,the load capacity of conventional blade may be better than the other two types,if the constraints on the total aspect ratio are removed.However,this does not prevent the splittered blade and tandem blade as important choices for compressors.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2015年第2期288-291,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.51176012
No.51006100)
