Robust design of a fan rotor blade by sweep and lean optimization with surface roughness

Abstract

In order to reduce the fan rotor aerodynamic performance degradation caused by the increasing of blade surface roughness, optimal design of high bypass ratio fan rotor blade with surface roughness was carried out to improve the aerodynamic performance of the fan rotor in long-term flight operation. With the condition of surface roughness uniformly distributed on the blade, the fan blade was optimized by using sweep and lean technology, and the aerodynamic characteristics of the fan blade with different surface roughness were numerically investigated. Numerical results show that the overall aerodynamic performance of the fan rotor decreases as the equivalent sand roughness k_s of the blade increasing from 3 μm to 150 μm. The isentropic efficiency of the original blade decreases by 1.56% when the surface roughness reaches 150 μm. Composite sweep and lean optimization was carried out when k_s = 80 μm, the isentropic efficiency of the optimized blade at design point is increased by 0.28%, the second optimization based on the optimized blade above by using the reverse lean technology further improved the fan isentropic efficiency by 0.12%, the degradation caused by surface roughness was reduced by optimization, and the robust design of fan rotor blade was achieved.

Keywords

fan rotor blade robust design surface roughness sweep and lean optimization performance degradation

Get full access to this article

View all access options for this article.

References

Hao Z Chao Z Jia-Nan

. Study on effect mechanism of local surface roughness of compressor blade on aerodynamic performance. J Aeronaut Sci Technol 2019; 30(01): 14–21.

Shao-wen

Hao

Song-tao

. Experimental research of surface roughness effects on highly-loaded compressor cascade aerodynamics. J Therm Sci 2014; 4: 307–314.

Liu-xi

Song

Jun-feng

. Effect of wall roughness on aerodynamic performance of axial compressors. J Xi’an Jiaotong Univ 2017; 51(11): 36–42.

Bammert

Milsch

. Boundary layers on rough compressor blades. In: ASME 1972 International Gas Turbine and Fluids Engineering Conference and Products Show, San Francisco, CA, USA: American Society of Mechanical Engineers, 26–30 March 1972, pp. V001T01A047–V001T01A047.

Bammert

Woelk

. The influence of the blading surface roughness on the aerodynamic behavior and characteristic of an axial compressor. ASME J Eng Power 1980; 102(2): 283–287.

Syverud

Brekke

Bakken

. Axial compressor deterioration caused by saltwater ingestion. In: ASME Turbo Expo 2005: Power for Land, Sea, and Air. Reno, NV: American Society of Mechanical Engineers, 2005, pp. 327–337.

Syverud

Bakken

. The impact of surface roughness on axial compressor performance deterioration. In: ASME Turbo Expo 2006: Power for Land, Sea, and Air. Barcelona: American Society of Mechanical Engineers, 2006, pp. 491–501.

Suder

Chima

Strazisar

, et al. The effect of adding roughness and thickness to a transonic axial compressor rotor. J Turbomach 1995; 117(4): 491–505.

Back

Hobson

Song

, et al. Effects of reynolds number and surface roughness magnitude and location on compressor cascade performance. J Turbomach 2012; 134(5): 051013.

10.

Morini

Pinelli

Spina

, et al. Computational fluid dynamics simulation of fouling on axial compressor stages. J Eng Gas Turbines Power 2010; 132(7): 072401.

11.

Shao-Wen

Chen

Hui

, et al. Numerical study on the impact of fouling on axial compressor stages. J Propulsion Technol 2012; 33(3): 377–383.

12.

Hui

Shao-Wen

Chen

, et al. Numerical simulation of fouling deposition in compressor rotor. J Aerospace Power 2012; 27(5): 1061–1067.

13.

Dong

Zhao-Yuan

Juan

, et al. Influence of blade roughness on compressor performance deterioration. Aeroengine J 2009; 35(5): 32–35.

14.

Hai-Ou

. Influence of surface roughness on boundary-layer flow and characteristics of an axial compressor. J Harbin Eng Univ 2017; 38(4): 554–560.

15.

Sasaki

Breugelmans

. Comparison of sweep and dihedral effects on compressor cascade performance. J Turbomach 1998; 120(3): 454–463.

16.

Wadia

Szucs

Crall

. Inner workings of aerodynamic sweep. In: ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition. Orlando, FL: American Society of Mechanical Engineers, 1997, pp. V001T03A062–V001T03A062.

17.

Vad

Kwedikha

ARA

Jaberg

. Influence of blade sweep on the energetic behavior of axial flow turbomachinery rotors at design flow rate. In: ASME Turbo Expo 2004: Power for Land, Sea, and Air. Vienna: American Society of Mechanical Engineers, 2004, pp. 447–456.

18.

Ming-Ming

. Numerical Investigation of Bowed and swept rotor in A transonic axial compressor, PhD Thesis, Harbin Institute of Technology, 2008.

19.

Ming-Ming

Yan-Ping Wang

Z-Q

. Research on design of swept and bowed rotor in a transonic axial flow compressor. J Power Eng 2008; 28(1): 58–63.

20.

Gallimore

Bolger

Cumpsty

, et al. The use of sweep and dihedral in multistage axial flow compressor blading—Part I: university research and methods development. J Turbomachinery 2002; 124(4): 521–532.

21.

Denton

. The effects of lean and sweep on transonic fan performance. In: ASME Turbo Expo 2002: Power for Land, Sea, and Air. Amsterdam: American Society of Mechanical Engineers, 2002, pp. 23–32.

22.

Zhao-yun

Peng

. Analysis of optimization of lean and sweep influence on highly loaded transonic tandem rotor. J Propulsion Technol 2018; 39(1): 23–32.

23.

Xiao-chen

Guo-Chen

, et al. Effectiveness of composite optimization of lean and sweep on transonic compressor performance. J Propulsion Technol 2015; 36(7): 996–1004.

24.

Ling-Xiao

. Research on the Fuel Control Law of Small Size Turbofan Engine, MPhil Thesis. Civil Aviation University of China, 2016.

25.

Deng-Wen

. Research of Modeling Techniques for Small Civilian High Bypass Ratio Turbofan Engine, MPhil Thesis, Civil Aviation University of China, 2016.

26.

Silingardi

Astrua

Piola

, et al. A Method for a Reliable Prediction of Heavy Duty Gas Turbines Performance Degradation Due to Compressor Aging Employing Field Test Data.Wien, Austria: Power gen Europe, Messe, 2013, pp. 4–6.

27.

Koch

Smith

. Loss sources and magnitudes in axial-flow compressors. J Eng Power 1976; 98(3): 411–424.