Qiao B, Ju YP, Zhang CH, 2021, Numerical investigation of negative flow characteristics in a centrifugal compressor with vaned diffuser and internal volute, ASME Journal of Fluids Engineering, accepted

研究背景：离心压缩机绝大多数情况下运行在正流量稳定工况区，但在极端情况如喘振、非计划性断电等，压缩机工作在正流量非稳定工况区甚至负流量工况区。目前对负流量区的气动特性及流动过程知之甚少，严重制约了喘振机理认识和防护技术的进一步深入与提高。

本文贡献：建立了适合于离心压缩机全工况的三维CFD模型，重点开展了某天然气管线离心压缩机末级负流量气动特性与流动分析，发现了叶轮叶片压力面射流冲击、叶轮叶片吸力面大分离流、叶轮叶片尾缘溢出流等复杂流动现象，发展了负流量一维特性计算模型，为丰富叶轮机械气动动力学知识、发展离心压缩机防喘技术具有学术价值和应用前景。

热机及流体机械四大权威期刊是：

ASME Journal of Turbomachinery

ASME Journal of Engineering for Gas Turbines and Power

ASME Journal of Fluids Engineering

AIAA Journal of Propulsion and Power

(1) Ju YP, Zhang CH, Chi XL, 2012, Optimization of centrifugal impellers for uniform discharge flow and wide operating range, AIAA Journal of Propulsion and Power, 28(5): 888-899

https://doi.org/10.2514/1.B34193

(2) Wang X, Liu XM, Zhang CH, 2013, Performance analysis of organic Rankine cycle with preliminary design of radial turbo-expander for binary-cycle geothermal plants, ASME Journal of Engineering for Gas Turbines and Power, 135(11): 111402-1-8

https://doi.org/10.1115/1.4025040

(3) Ju YP, Zhang CH, 2014, Design optimization and experimental study of tandem impeller for centrifugal compressor, AIAA Journal of Propulsion and Power, 30(6): 1490-1501

https://doi.org/10.2514/1.B34933

(4) Liu A, Ju YP, Zhang CH, 2018, Parallel simulation of aerodynamic instabilities in transonic axial compressor rotor, AIAA Journal of Propulsion and Power, 34(6): 1561-1573

https://doi.org/10.2514/1.B37038

(5) Qiao B, Ju YP, Zhang CH, 2019, Numerical investigation on labyrinth seal leakage flow and its effects on aerodynamic performance for a multistage centrifugal compressor, ASME Journal of Fluids Engineering, 141(7):071107-1-12

https://doi.org/10.1115/1.4042370

(6) Wang K, Ju YP, Zhang CH, 2019, A quantitative evaluation method for impeller-volute interaction and application to squirrel cage fan with bionic volute tongue, ASME Journal of Fluids Engineering, 141(8):081104-1-13

https://doi.org/10.1115/1.4042372

(7) Li Z, Ju YP, Zhang CH, 2019, Parallel large-eddy-simulation of subsonic and transonic flows with transition in compressor cascade, AIAA Journal of Propulsion and Power, 35(6): 1163-1174

https://doi.org/10.2514/1.B37371

(8) Qin RH, Ju YP, Galloway L, Spence S, Zhang CH, 2020, High dimensional matching optimization of impeller-vaned diffuser interaction for a centrifugal compressor stage, ASME Journal of Turbomachinery, 142(12): 121004-1-18

https://doi.org/10.1115/1.4047898

(9) Ju YP, Feng Y, Zhang CH, 2020, Conjugate heat transfer simulation and entropy generation analysis of gas turbine blades, ASME Journal of Engineering for Gas Turbines and Power, 143(8): 081012

https://doi.org/10.1115/1.4049989

(10) Qin RH, Ju YP, Stephen S, Zhang CH, 2021, Metamodel-driven data mining model to support centrifugal compressor design, ASME Journal of Turbomachinery, 143(12): 121013-1-17

https://doi.org/10.1115/1.4051713

(11) Qiao B, Ju YP, Zhang CH, 2021, Numerical investigation of negative flow characteristics in a centrifugal compressor with vaned diffuser and internal volute, ASME Journal of Fluids Engineering, accepted