Effects of leading edge profiles on flow behavior and performance of supercritical CO2 centrifugal compressor

J Pei, Y Zhao, M Zhao, G Liu, Q Yang, L Li - International Journal of …, 2022 - Elsevier
The supercritical carbon dioxide (sCO 2) Brayton cycle is considered one of the promising
power cycles. Centrifugal compressors are the core equipment of sCO 2 systems. The inlet …

[HTML][HTML] Effects of inlet working condition and heat load on supercritical CO2 compressor performance

J Pei, Y Zhao, M Zhao, G Liu, Q Yang, L Li - Nuclear Engineering and …, 2023 - Elsevier
The supercritical carbon dioxide (sCO 2) Brayton power cycle is more effective than the
conventional power cycle and is more widely applicable to heat sources. The inlet working …

Performance investigation of Wells turbine for wave energy conversion with stall cylinders

K Geng, C Yang, C Hu, Y Li, X Shi - Ocean Engineering, 2021 - Elsevier
The wave energy conversion of oscillation water column (OWC) systems is limited by the
narrow range of efficient operation of Wells turbines. Effective control methods are critical to …

[HTML][HTML] Investigation of flow unsteadiness in a highly-loaded compressor cascade using a dynamic mode decomposition method

AN Guangyao, WU Yanhui, L Jinhua, C Zhiyang… - Chinese Journal of …, 2022 - Elsevier
Unsteady flow in the hub endwall region has long been a hot topic in the turbomachinery
community. However important it is to the performance of the whole engine, the coherent …

Effect of non-axisymmetric endwall and periodic upstream wakes on the aero-thermal dynamics in turbine cascade

C Hu, H Liu, K Geng, C Yang - International Journal of Mechanical …, 2021 - Elsevier
The thermal management and heat transfer behavior considering both the contoured
endwall and upstream wakes were seldom investigated. In the present work, the …

Stall evolution mechanism of a centrifugal compressor with a wide-long vaneless diffuser

L Zhang, J Kang, J Lang, G An, Q Zhang… - Journal of Thermal …, 2024 - Springer
The rotating stall mechanism is of high importance for the stability of centrifugal compressors
and thermal power cycles. The majority of research concerning this topic has concentrated …

Modelling and dynamic mode analysis of compressor impeller spike-type stall with global stability approach

C Yang, L Fu, C Hu, X Shi - International Journal of Mechanical Sciences, 2021 - Elsevier
Flow instability associated with spike-stall restricts the development of advanced aero-
engines with a high-speed centrifugal compressor. However, given the irregular structure of …

Loss evaluation and aerodynamics investigation of an aggressive intermediate turbine duct under off-design conditions

K Geng, C Hu, C Yang, Y Li… - Proceedings of the …, 2022 - journals.sagepub.com
To maximize the performance of the intermediate turbine duct (ITD) under off-design
conditions, the loss generation in a one-half stage turbine was quantified using entropy …

Experimental analysis of flow instability detection in a centrifugal compressor using variational mode decomposition

W Wang, H Zhang, C Yang, C Hu - The Aeronautical Journal, 2022 - cambridge.org
In centrifugal compressors, the identification of flow instability signals from experiments is a
difficult problem owing to the nonlinear and non-stationary characteristics. Otherwise, the …

Numerical modeling of the dynamic unsteadiness with global mode decomposition approach in a high-speed compressor with abnormal diffuser vane

C Hu, C Yang - Proceedings of the Institution of Mechanical …, 2023 - journals.sagepub.com
Adjustable vane diffuser is addressed as one of the main techniques in centrifugal
compressor in seeking of wider stability margin. Flow instabilities, however, may be driven …