摘要
本文针对低雷诺数条件下低压涡轮效率较低的问题,提出了设计过程中应如何考虑雷诺数影响的思路,给出了适应低雷诺数环境下工作的叶片表面负荷分布形式,并进行了低压涡轮的气动设计。三维粘性计算的结果表明,应用本文所提出的负荷分布形式,能够有效的控制涡轮边界层的分离,降低气动性能对雷诺数的敏感程度,从而使得低压涡轮在高空低雷诺数条件下仍能保持较好的性能。
This paper concerning under low Reynolds number condition the low efficiency of low pressure turbines (LPT) presents how to consider the effect of Reynolds number in design cycle, and a reasonable loading distribution form is given with one practical design example. Three-dimensional vicious calculation results show that the application of present loading distribution can efficiently control boundary layer separation and decrease the sensitivity to Reynolds number of LPT, accordingly the performance of LPT keeps better under high altitude and low Reynolds number conditions.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2005年第2期228-230,共3页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.50206001)航空基础科学基金项目资助(No.03C51030)国防基础科研项目资助(No.K1204060722)
关键词
低雷诺数
低压涡轮
气动设计
low Reynolds number
low pressure turbine
aerodynamic design
