| A multi-fidelity simulation method research on front variable area bypass injector of an adaptive cycle engine |
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| 作者姓名： | Zhewen XU Ming LI Hailong TANG Min CHEN |
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| 作者单位： | 1. School of Energy and Power Engineering, Beihang University;2. Aero Engine Academy of China;3. Research Institute of Aero-Engine, Beihang University |
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| 基金项目： | funded by National Natural Science Foundation of China (Nos. 51776010 and 91860205)；;National Science and Technology Major Project, China (No. 2017-I0001-0001)； |
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| 摘 要： | Front Variable Area Bypass Injector(Front-VABI) is a component of the Adaptive Cycle Engine(ACE) with important variable-cycle features. The performance of Front-VABI has a direct impact on the performance and stability of ACE, but the current ACE performance model uses approximate models for Front-VABI performance calculation. In this work, a multi-fidelity simulation based on a de-coupled method is developed which delivers a more accurate calculation of the Front-VABI performance based on Comp...
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| 收稿时间： | 17 November 2020 |
A multi-fidelity simulation method research on front variable area bypass injector of an adaptive cycle engine |
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| Zhewen XU,Ming LI,Hailong TANG,Min CHEN.A multi-fidelity simulation method research on front variable area bypass injector of an adaptive cycle engine[J].Chinese Journal of Aeronautics,2022,35(4):202-219. |
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| Institution: | 1. School of Energy and Power Engineering, Beihang University, Beijing 100083, China;2. Aero Engine Academy of China, Beijing 101300, China;3. Research Institute of Aero-Engine, Beihang University, Beijing 102206, China |
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| Abstract: | Front Variable Area Bypass Injector (Front-VABI) is a component of the Adaptive Cycle Engine (ACE) with important variable-cycle features. The performance of Front-VABI has a direct impact on the performance and stability of ACE, but the current ACE performance model uses approximate models for Front-VABI performance calculation. In this work, a multi-fidelity simulation based on a de-coupled method is developed which delivers a more accurate calculation of the Front-VABI performance based on Computational Fluid Dynamics (CFD) simulation. This simulation method proposes a form of Front-VABI characteristic and its matching calculation method between it and the ACE performance model, constructs a coupling method between the (2-D) Front-VABI model and the (0-D) ACE performance model. The result shows, when ACE works in triple bypass mode, the approximate model cannot account for the effect of Front-VABI pressure loss on Core Driven Fan Stage (CDFS) design pressure ratio, and the calculated error of high-pressure turbine inlet total temperature is more than 40 K in mode transition condition (the transition operating condition between triple bypass mode and double bypass mode). In double bypass mode, the approximate model can better simulate the performance of Front-VABI by considering the local loss of area expansion. This method can be applied to the performance-optimized design of Front-VABI and the ACE control law design during mode transition. |
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| Keywords: | Adaptive cycle engine Computational fluid dynamics Front variable area bypass injector Multi-fidelity simulation Performance model |
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