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首页> 外文期刊>International journal of non-linear mechanics >Non-linear panel instabilities at high-subsonic and low supersonic speeds solved with strongly coupled CIRA FSI framework
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Non-linear panel instabilities at high-subsonic and low supersonic speeds solved with strongly coupled CIRA FSI framework

机译：具有强烈耦合的CIRA FSI框架解决了高亚态和低超音速的非线性面板稳定性

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摘要

Nonlinear aspects of aeroelastic stability are here investigated for two and three dimensional panels in high subsonic and low supersonic flows. The effects of edge constraints and initial conditions on post-flutter behaviour are also studied.Such phenomena are crucial for spatial launchers development, that has renewed interest due to a larger number of commercial companies in the frame of space flight access.Numerical analyses are carried out with a framework developed at CIRA, able to deal with Fluid Structure Interaction simulation in a partitioned approach. The CIRA multi-block structured flow solver for unsteady Navier-Stokes equations was updated and tightly coupled with the open-source finite element method code CalculiX in a modular approach.The results are compared in terms of static divergence and Limit Cycle Oscillations with literature results.
机译：这里的空气弹性稳定性的非线性方面在高亚音速和低超音速流动中进行了两个和三维板。边缘限制和初始条件对颤振后行为的影响也是研究.Such现象对于空间发射器开发至关重要，这对空间飞行框架框架中的商业公司数量增加了兴趣。携带数量分析通过在CiRA开发的框架，能够以分区方法处理流体结构交互模拟。对于非稳态Navier-Stokes方程的CiRA多块结构流量求解器被更新，并以模块化方法与开源有限元方法代码计算紧密耦合。在静态发散和限制与文献结果的限制周期振荡方面的结果进行了比较。结果。

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