TY  - JOUR
AU  - YANG, Xuesen
AU  - JIAN, Menghua
AU  - DONG, Wei
AU  - XU, Qiannan
PY  - 2023
TI  - Simulation of the secondary air system of turbofan engines: Insights from 1D-3D modeling
JO  - Chinese Journal of Aeronautics
SN  - 1000-9361
SP  - 231
EP  - 245
VL  - 36
IS  - 1
AB  - Focusing on the internal flow and heat transfer analysis, a platform for the performance evaluation of the Secondary Air System (SAS) is developed. A multi-fidelity modeling technique has been developed in a turbofan engine model under different flight conditions. A turbine blade cooling model which integrates external heat transfer calculations and coolant side modeling with common components is proposed. In addition, the Computational Fluid Dynamics (CFD) method is selected to capture the complex flow field structure in the preswirl system. The validity of the SAS models is compared with publicly available data. An elaborately designed cooling system for the AGTF30 engine is analyzed through three main branches. It is found that the 1D-3D modeling technique can provide more accurate predictions of the SAS for the AGTF30 engine. The results demonstrate the versatility and flexibility of the SAS models, thereby indicating the capacity of meeting most of the demands of flow and thermal analysis of the SAS.
UR  - https://doi.org/10.1016/j.cja.2022.06.018
DO  - 10.1016/j.cja.2022.06.018