Vibration Power Flow of an Infinite Cylindrical Shell Submerged in Viscous Fluids
Vibration Power Flow of an Infinite Cylindrical Shell Submerged in Viscous Fluids
复制标题
浸没在粘性流体中的无限圆柱壳的振动功率流
DOI：
10.1155/2020/8828204
复制
发表时间：
2020-09
影响因子：
1.6
通讯作者：
Yijun Shen
中科院分区：
文献类型：
--
作者：
Haosen Chen;Peng Yang;Yijun Shen
在以往对流场中淹没圆柱壳振动声特性的研究中，通常忽略了流体粘度的影响。本文研究了流体粘度对浸入粘性声介质的无限圆圆柱壳振动功率流特性的影响。采用Flugge关于各向同性弹性圆柱薄壳的薄壳理论，得到了该结构在圆周分布线力作用下的运动方程。结合粘性流场的波动方程和界面处的连续性条件，导出了耦合系统的振动声运动方程。采用附加阻尼数值积分法和十点高斯积分法对不同黏度下的振动声耦合方程进行了数值分析。然后，详细讨论了不同周向模数耦合系统中输入功率流随无量纲轴向波数的变化。研究发现，流体粘度对振声耦合系统的影响主要集中在低频频段，表现为输入功率流曲线波峰数和幅值的增加。
In the previous investigations of the vibroacoustic characteristics of a submerged cylindrical shell in a flow field, the fluid viscosity was usually ignored. In this paper, the effect of fluid viscosity on the characteristics of vibration power flow in an infinite circular cylindrical shell immersed in a viscous acoustic medium is studied. Flugge’s thin shell theory for an isotropic, elastic, and thin cylindrical shell is employed to obtain the motion equations of the structure under circumferential-distributed line force. Together with the wave equations for the viscous flow field as well as continuity conditions at the interface, the vibroacoustic equation of motion in the coupled system is derived. Numerical analysis based on the additional-damping numerical integral method and ten-point Gaussian integral method is conducted to solve the vibroacoustic coupling equation with varying levels of viscosity. Then, the variation of the input power flow against the nondimensional axial wave number in the coupled system with different circumferential mode numbers is discussed in detail. It is found that the influence of fluid viscosity on the vibroacoustic coupled system is mainly concentrated in the low-frequency band, which is shown as the increase of the crest number and amplitude of the input power flow curves.
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影响因子：
--
作者：
J. Dymond
通讯作者：
J. Dymond
DOI：
--
发表时间：
1999
期刊：
--
影响因子：
--
作者：
Xu Mubin
通讯作者：
Xu Mubin
影响因子：
4.7
作者：
S. Sorokin;A. V. Chubinskij
通讯作者：
S. Sorokin;A. V. Chubinskij
影响因子：
4.7
作者：
T. Su
通讯作者：
T. Su
影响因子：
2.4
作者：
Wen H. Lin;A. C. Raptis
通讯作者：
Wen H. Lin;A. C. Raptis