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| Aerodynamic ROM of blade due to upstream wake |
| Received:June 09, 2017 Revised:September 20, 2017 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20170609002 |
| KeyWord:aerodynamic ROM wake Volterra series kernel identification blade step method |
| Author | Institution |
| 李立州 |
中北大学 机电工程学院, 太原 |
| 杨明磊 |
中北大学 机电工程学院, 太原 |
| 张珺 |
太原学院数学系, 太原 |
| 罗骁 |
中北大学 机电工程学院, 太原 |
| 原梅妮 |
中北大学 机电工程学院, 太原 |
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| Abstract: |
| Aerodynamic reduced order model (ROM) is an efficient method to study aeroelastic vibration of turbo-machine blades.Nowadays, the researches on this topic are mainly focused on flutter analysis.There is no discussion about the forced vibration corresponding to incoming wakes, which is more important for turbo-machine design.In this paper, a Volterra ROM is proposed for describing the aerodynamic forces on the blades induced by wake excitation, which aims to provide an effective way for blade-wake or stator-rotor interaction analysis.Traveling wave method is used to simplify the wake inputs in the ROM.Step method is used to identify the kernels of the ROM.A 2D blade example is used to show the accuracy and efficiency of the ROM.The results show that the method can characterise the aerodynamic forces corresponding to the wakes. |
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