叶身/端壁融合技术工况的适用性  

Applicability of blended blade and endwall under different operating conditions

作　　者：田勇[1,2] 季路成[3] 李伟伟[1,2] 伊卫林[3] 肖云汉[1] 

机构地区：[1]中国科学院工程热物理研究所 先进能源动力重点实验室,北京100190 [2]中国科学院大学,北京100049 [3]北京理工大学宇航学院,北京100081

出　　处：《航空动力学报》2013年第8期1905-1913,共9页Journal of Aerospace Power

基　　金：国家自然科学基金(51006100,51176012)

摘　　要：在前期提出并初步验证了叶身/端壁融合(BBEW)技术效果的基础上,以NASA Rotor 67为例实施BBEW改型,研究了100%,90%和80%三种转速,海平面与万米高空两种不同雷诺数工况条件下BBEW技术的实施效果.数值结果表明:相对于原型,BBEW改型在几乎所有工况范围内均显现出总压比、效率等性能提升.在低转速和低雷诺数下的收益更为明显,效率收益可达0.6%～0.8%.这表明BBEW技术具有宽广的工况适用性,将是弯、掠以外叶轮机全三维叶片造型的又一重要方面.To continue the previous work,NASA rotor 67 redesigned with blended blade and endwall（BBEW） was further studied and focused on assessing the influences of three different rotating speeds,i.e.100%,90% and 80% of full speed,at two different Reynolds numbers,under ground condition and 10 000-meter high altitude condition.Numerical tests show that under almost all the operating conditions in relation to original model,BBEW model can improve performance such as total pressure ratio and isentropic efficiency,particularly under conditions of low rotating speeds and low Reynolds numbers,with the efficiency up by 0.6% to 0.8%.This indicates that BBEW has broad applications under operating conditions,serving as another important aspect of full 3-D blade in addition to sweep and bow techniques.

关 键 词：叶身 端壁融合(BBEW) 二面角原理 倒圆 角区分离 叶轮机 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]