| 跨声速风扇的流固耦合的颤振分析(英文) |
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| 引用本文： | 郑赟,杨慧.跨声速风扇的流固耦合的颤振分析(英文)[J].中国航空学报,2011(3):258-264. |
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| 作者姓名： | 郑赟 杨慧 |
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| 作者单位： | 北京航空航天大学; |
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| 基金项目： | Fan-Zhou Foundation of Beihang University (20090404); “111” Project (B08009) |
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| 摘 要： | 发展了时间推进的叶片颤振的数值方法,采用了时间推进求解流体和固体相互作用的过程。气动模型是基于求解三维雷诺平均的N-S方程,采用了多块结构化网格的有限体积格式,对流和耗散通量的计算使用了二阶迎风格式和中心格式。在变形的动网格上流体运动的守恒型方程的求解采用双时间步,隐式格式和多重网格方法。叶片振动采用了振型叠加的线性气动弹性模型。该方法在气动弹性标准算例4进行了验证,并用于求解跨音速风扇的颤振问题。
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| 关 键 词： | 跨音速流动 非定常流动 颤振 跨音速风扇 流固耦合 叶轮机机械 |
Coupled Fluid-structure Flutter Analysis of a Transonic Fan |
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| ZHENG Yun,YANG Hui School of Jet Propulsion,Beihang University,Beijing ,China.Coupled Fluid-structure Flutter Analysis of a Transonic Fan[J].Chinese Journal of Aeronautics,2011(3):258-264. |
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| Authors: | ZHENG Yun YANG Hui School of Jet Propulsion Beihang University Beijing China |
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| Institution: | ZHENG Yun,YANG Hui School of Jet Propulsion,Beihang University,Beijing 100191,China |
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| Abstract: | A coupled fluid-structure method is developed for flutter analysis of blade vibrations in turbomachinery.The approach is based on the time domain solution of the fluid-structure interaction in which the aerodynamic and structural equations are marched simultaneously in time.The three-dimensional (3D) unsteady Reynolds average Navier-Stokes (RANS) equations are solved with a multiblock finite volume scheme on dynamic deforming grids to evaluate the aerodynamic force.Dual time-stepping technique and an effici... |
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| Keywords: | transonic flow unsteady flow flutter transonic fan fluid-structure interaction turbomachinery |
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