Research on Fluid Elasticity in Space Flight Vehicle.

航天飞行器流体弹性研究。

• 批准号: 63550055
• 负责人: MATSUZAKI Yuji
• 金额: $ 1.28万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-63550055/
• 关键词: Thin-walled elastic channel; Self-excited oscillation; Two-dimensional flow channel; Nonlinear stability analysis; 非線形自励振動; 2自由度弾性系モデル

It is well-known that thin-walled elastic channel conveying fluid, such as liquid fuel pipings of space vehicles, show very complicated static and dynamic phenomena, including self-excited oscillation, due to the coupling between the fluid pressure and the elastic deformation of the channel walls. Many theoretical and experimental studies have been carried out to investigate such behavior of the flow-channel. Not only in the space vehicles, the fluid-conveying channels have many applications in chemical plants, atomic energy power stations and medical treatments. There are, however, no reliable fundamental data on the relation between the wall deformation and the fluid pressure along the channel.In the experimental part of the present study, therefore, a two- dimensional flow channel was built to measure along the channel the flow pressure at a number of points on the channel wall. A one-side of the channel walls can statically or harmonically be moved by an external piston, while the … More other wall is rigid and fixed. Measurement on the pressure was made with the flow rate being fixed. Numerical calculations based on a one-dimensional flow channel analysis was performed to compare with measured results on the relation between the fluid pressure and the flow rate. Comparison between the numerical and experimental results provides useful information for improving the previous analytical channel- flow model proposed by the present researchers.In the analytical part of this study, stability and bifurcation of a double pendulum subjected to a follower force was examined from a view point of fluid elasticity. The double pendulum models a two-staged rocket propelled by a jet thruster. In this nonlinear stability analysis, used was a differential geometrical approach which has rapidly developed during the last decade. The static and dynamic stability characteristics of the pendulum have fully been clarified. In addition, aperiodic motions of the fluid-conveying channel observed in experiments have been analyzed to possess chaotic characteristics. Less

众所周知，薄壁弹性流体通道，如空间飞行器的液体燃料管道，表现出非常复杂的静态和动态现象，包括自激振荡，由于流体压力和通道壁的弹性变形之间的耦合。许多理论和实验研究已经进行了调查的流动通道的这种行为。流体输送通道不仅在航天器上，在化工厂、原子能发电站和医疗等领域也有着广泛的应用。然而，关于壁面变形与沿着通道的流体压力之间的关系，目前还没有可靠的基础数据，因此，在本研究的实验部分，建立了一个二维流动通道，测量沿着通道上多个点处的流体压力。通道壁的一侧可以通过外部活塞静态地或协调地移动，而通道壁的另一侧可以通过外部活塞移动。 ...更多信息 另一面墙是刚性的和固定的。在流量固定的情况下进行压力测量。基于一维流道分析进行了数值计算，并与流体压力和流量之间的关系的测量结果进行比较。数值计算结果与实验结果的比较为改进已有的槽道流解析模型提供了有用的信息。在分析部分，从流体弹性力学的角度研究了受随动力作用的双摆系统的稳定性和分叉问题。双摆模拟了由喷气推进器推进的两级火箭。在这种非线性稳定性分析中，使用的是在过去十年中迅速发展的微分几何方法。充分阐明了摆的静态和动态稳定特性。此外，在实验中观察到的流体输送通道的非周期运动已被分析具有混沌特性。少

项目成果

Y. Matsuzaki: "Flow in a Two-Dimensional Collapsible Channel with Rigid Inlet and Outlet" Trans. ASME, J. Biomech. Engng., Vol.111, pp.180-184, 1989.

Y. Matsuzaki：“具有刚性入口和出口的二维可折叠通道中的流动”Trans。

Y.Matsuzaki: "Flow in a Two-Dimensional Collapsibel Channel with Rigid Inlet and Outlet" Transactions of the ASME Journal of Biomechanical Engineering. Vol.111. 180-184 (1989)

Y.Matsuzaki：“具有刚性入口和出口的二维塌陷通道中的流动”ASME 生物机械工程期刊汇刊。

Y.Matsuzaki: "Codimension Three Bifurcation of a Double Pendulum Subjected to a Follower Force with Imperfection" AIAA Dynamic Specialists Conference AIAA 90-1230. (1990)

Y.Matsuzaki：“受不完美从动力影响的双摆的余维三分叉”AIAA 动态专家会议 AIAA 90-1230。

Y.MATSUZAKI: Journal of Sound and Vibration. 126(2). 265-277 (1988)

Y.MATSUZAKI：声音与振动杂志。

Y.Matsuzaki: "Flow in a Two-Dimensional Collapsible Channel with Rigid Inlet and Outlet" Transactions of the ASME,Journal of Biomechanical Engineering. Vol.111. 180-184 (1989)

Y.Matsuzaki：“具有刚性入口和出口的二维可折叠通道中的流动”ASME 汇刊，生物机械工程学报。