低雷诺数效应对某可控扩散叶型性能的影响

基金项目: 国家自然科学基金资助(5007600150136010)

The Low Reynolds Number Effects on the Performance of Some Controlled Diffusion Airfoils

School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要: 为研究雷诺数效应对叶栅流动的影响,对某可控扩散叶型的平面叶栅流动进行数值模拟,计算在叶弦雷诺数分别为1×10⁶,7.7×10⁴,1.6×10⁴,7.2×10³和3.4×10³条件下的不同攻角的流动情况,研究雷诺数对叶栅总压损失系数和攻角特性的影响。对叶栅性能和流场特性进行了分析,结果表明随着雷诺数的降低,叶栅流动的总压损失系数不断上升,低损失攻角范围逐步减小。
- 航空、航天推进系统 /
- 低雷诺数 /
- 可控扩散叶型 /
- 数值模拟
Abstract: In order to analyze the effect of low-Reynolds number on the performance of some controlled diffusion airfoils,calculations were performed under different Re No.of 1×10⁶,7.7×10⁴,1.6×10⁴,7.2×10³,3.4×10³with different incidences respectively.The results of numerical simulation show that the total pressure loss coefficient increases with the decrease of Reynolds number.Under the condition of low Reynolds number,the incidence range of low loss becomes narrow.
- aerospace propulsion system /
- low Reynolds number /
- controlled diffusion airfoil /
- numerical analysis

[1]	Wassell A B.Reynolds Number Effects in Axial Compressors[J].Trans.of ASME (A),J.of Engineering for Power,1968,90(2):149～156.
[2]	顾明皓,桂幸民.低雷诺数效应对某型风扇的性能影响及改进方案研究[J].航空动力学报,2004,8(4):438～443.Gu Ming-hao,Gui Xing-min.Low-Re Number Effects on the Performanceof Some Fans and the Modified Design[J].Journal of Aerospace Power,2004,8 (4):438 ～ 443.
[3]	Hobson G V,Weber S.Prediction of a Laminar Separation Bubble over a Controlled-Diffusion Compressor Blade[R].ASME 2000-GT-277,2000.
[4]	Steinert W,Eisenberg B.Design and Testing of a Controlled Diffusion Airfoil Cascade for Industrial Axial Flow Compres sor Application[J].Trans of ASME,J.of Turbornachinery,1991,113:583～590.