Axial overlap (AO) and percent pitch (PP) are considered as key position configuration parameters that affect the tandem cascade performance. The objective of the current study is to investigate the optimal design criteria for these two parameters in tandem cascades of subsonic highly-loaded two-dimensional compressors. Before that, the influence mechanisms of AO and PP are explored separately. Research results show that higher PP is beneficial for decreasing rear blade (RB) load, but an invalidity of gap flow occurs when it approaches 1. The change in AO has an influence on the adverse pressure gradient of the front blade (FB), and it also affects the gap flow strength and FB wake development. Then, the optimal design criteria for AO and PP are obtained in a large design space, which clarifies the matching relationship of the two parameters at different operating conditions. The best global range of AO is about –0.05 to 0.05 while PP is between 0.85 to 0.92, and PP should be smaller to avoid performance degradation as AO increases. According to the fault tolerance in practical applications, PP should be closer to the lower bound to ensure that the deterioration boundary is wide enough.
MAO Xiaochen
,
JIAO Yingchen
,
CHENG Hao
,
ZHANG Botao
,
LIU Bo
. Optimal Design Criteria of Tandem Configuration for High-Load Compressor Cascades[J]. Journal of Thermal Science, 2024
, 33(6)
: 2047
-2058
.
DOI: 10.1007/s11630-024-2053-6
[1] Biollo R., Benini E., Recent advances in transonic axial compressor aerodynamics. Progress in Aerospace Sciences, 2013, 56(1): 1–18.
[2] Mcglumphy J., Ng W.F., Wellborn S.R., Kempf S., Numerical investigation of tandem airfoils for subsonic axial-flow compressor blades. Journal of Turbomachinery, 2009, 131(2): 174–181.
[3] Peng H.B., Feng Y., Tao Y., Study on flow mechanism of tandem blades. Computer Simulation, 2023, 40(02): 33–38. (in Chinese)
[4] Liu B.J., Fu D., Yu X.J., Maximum loading capacity of tandem blades in axial compressors. ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition, Oslo, Norway, 2018, ASME GT2018-76770.
[5] Chen L., Ju Y.P., Zhang C.H., Tandem blading and flow mechanism of last stator of multi-stage axial flow compressor. Journal of Xi’an Jiaotong University, 2022, 56(10): 170–179. (in Chinese)
[6] Liu B.J., Zhang C, An G.F., Fu D., Yu X.J., Using tandem blades to break loading limit of highly loaded axial compressors. Chinese Journal of Aeronautics, 2022, 35(4): 165–175.
[7] Ju Y.P., Zhang C.H., Multi-objective optimization design method for tandem compressor cascade at design and off design conditions. ASME Turbo Expo 2010: Power for Land, Sea, and Air, Glasgow, Britain, June 14–18, 2010, ASME GT2010-22655.
[8] Cheng H., Liu B., Yang X.D., Design and optimization of tandem cascade based on parallel differential evolution algorithm. ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition, Seoul, South Korea, 2016, ASME GT2016-56908.
[9] Song Z.Y., Liu B., Cheng H., Mao X.C., Multi-objective optimization design and analysis of high-turning tandem cascade. ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition, Oslo, Norway, 2018, ASME GT2018-76164.
[10] Sun S.J., Hao J.Q., Yang J.T., Zhou L., Ji L.C., Impacts of tandem configurations on the aerodynamic performance of an axial supersonic through-flow fan cascade. Journal of Turbomachinery, 2022, 144(4): 041009.
[11] Li K.H., Meng F.J., Wang K.B., Guo P.H., Li J.Y., Performance-driven multi-objective optimization method for DLR transonic tandem cascade shape design. Journal of Thermal Science, 2023, 32(1): 297–309.
[12] Shen C, Qiang X.Q., Teng J.F., Numerical and experimental investigation of an axial compressor flow with tandem cascade. Journal of Thermal Science, 2012, 21: 500–508.
[13] Shen C, Teng J.F., Numerical investigation of axial displacement effect on tandem cascade. Science Technology and Engineering, 2013, 13(05): 1238–1241. (in Chinese)
[14] Yang S.L., Teng J.F., Qiang X.Q., Effect of Tangential displacement on tandem cascade aerodynamic performance. Energy Conservation Technology, 2016, 34(02): 129–133. (in Chinese)
[15] Schneider T., Kožulović D., Flow characteristics of axial compressor tandem cascades at large off-design incidence angles. ASME Turbo Expo 2013: Turbine Technical Conference and Exposition, San Antonio, America, 2013, ASME GT2013-94708.
[16] Madasseri P.M., Shine S.R., Numerical investigation on tandem compressor cascades. ASME Turbo Expo 2015: Gas Turbine India Conference, Hyderabad, India, 2015, ASME GT2015-1311.
[17] Hergt A., Siller U., About subsonic compressor tandem aerodynamics-A fundamental study. 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu, 2016, HAL-01884245.
[18] Madasseri P.M., Shine S.R., Characterization of tandem airfoil configurations of axial compressors. International Journal of Turbo and Jet Engines, 2022, 39(2): 167–181.
[19] McNally W.D., Crouse J.E., FORTRAN program for computing coordinates of circular arc single and tandem turbomachinery blade sections on a plane. NASA Report, Washington, America, 1970, NASA-TN-D-6020.
