Multi-Fidelity Simulation of Gas Turbine Overall Performance by Directly Coupling High-Fidelity Models of Multiple Rotating Components

Deng, Weimin1,3; Xu, Yibing2; Ni, Ming1,3; Wei, Zuojun1,3; Gan, Xiaohua1,3; Ren, Guangming1,3

2024-06-01

10.1007/s11630-024-1975-3

JOURNAL OF THERMAL SCIENCE   影响因子和分区

1003-2169

1993-033X

Multi-fidelity simulations incorporate computational fluid dynamics (CFD) models into a thermodynamic model, enabling the simulation of the overall performance of an entire gas turbine with high-fidelity components. Traditional iterative coupled methods rely on characteristic maps, while fully coupled methods directly incorporate high-fidelity simulations. However, fully coupled methods face challenges in simulating rotating components, including weak convergence and complex implementation. To address these challenges, a fully coupled method with logarithmic transformations was developed to directly integrate high-fidelity CFD models of multiple rotating components. The developed fully coupled method was then applied to evaluate the overall performance of a KJ66 micro gas turbine across various off-design simulations. The developed fully coupled method was also compared with the traditional iterative coupled method. Furthermore, experimental data from ground tests were conducted to verify its effectiveness. The convergence history indicated that the proposed fully coupled method exhibited stable convergence, even under far-off-design simulations. The experimental verification demonstrated that the multi-fidelity simulation with the fully coupled method achieved high accuracy in off-design conditions. Further analysis revealed inherent differences in the coupling methods of CFD models between the developed fully coupled and traditional iterative coupled methods. These inherent differences provide valuable insights for reducing errors between the component-level model and CFD models in different coupling methods. The developed fully coupled method, introducing logarithmic transformations, offers more realistic support for the detailed and optimal design of high-fidelity rotating components within the overall performance platform of gas turbines.

multi-fidelity fully coupled method iterative coupled method gas turbine component-level model

SCI ; EI

英语

第一 ; 通讯

Science and Technology Innovation Committee Foundation of Shenzhen["JCYJ20200109141403840","ZDSYS20220527171405012"] ; National Natural Science Foundation of China (NSFC)[52106045]

Thermodynamics ; Engineering

Thermodynamics ; Engineering, Mechanical

WOS:001237729100001

SPRINGER

20242316218902

Computational fluid dynamics ; Gases ; Iterative methods

Gas Turbines and Engines:612.3 ; Computer Applications:723.5 ; Numerical Methods:921.6 ; Mechanics:931.1

Web of Science

1.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Peoples R China
2.Tsinghua Univ, Sch Aerosp Engn, Beijing 100084, Peoples R China
3.Shenzhen Sci & Technol Innovat Comm, Shenzhen Key Lab Wide Speed Range & Variable Dens, Shenzhen 518000, Peoples R China

Deng, Weimin,Xu, Yibing,Ni, Ming,et al. Multi-Fidelity Simulation of Gas Turbine Overall Performance by Directly Coupling High-Fidelity Models of Multiple Rotating Components[J]. JOURNAL OF THERMAL SCIENCE,2024,33:1357-1378.

Deng, Weimin,Xu, Yibing,Ni, Ming,Wei, Zuojun,Gan, Xiaohua,&Ren, Guangming.(2024).Multi-Fidelity Simulation of Gas Turbine Overall Performance by Directly Coupling High-Fidelity Models of Multiple Rotating Components.JOURNAL OF THERMAL SCIENCE,33,1357-1378.

Deng, Weimin,et al."Multi-Fidelity Simulation of Gas Turbine Overall Performance by Directly Coupling High-Fidelity Models of Multiple Rotating Components".JOURNAL OF THERMAL SCIENCE 33(2024):1357-1378.