Leakage-Flow-Induced Vibrations of an Axisymmetric Body : Analysis of the Fluid Dynamic Forces Exerted on an Axisymmetric Body
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概要
- 論文の詳細を見る
An analytical investigation is presented on leakage-flow-induced vibrations of an axisymmetric body. In the case of a narrow annular passage between a tapered outer cylinder and a tapered axisymmetric body, the fluid-dynamic forces acting on the body have been divided into the fluid-dynamic mass, damping and stiffness. The following conclusions were obtained through research on those coefficients. The dynamic instability of the systems is due to fhe phade lag of the fluid-dynamic force for displacement of the body caused by harmonic vibration. The fluid-dynamic damping is obtained in two parts: one is independent of the frequency and the other is a function of the frequency, and the negative damping is caused by the fluid-dynamic damping which is a function of the frequency. When the frequency is very large, the fluid-dynamic mass agrees with added mass within the fluid at rest.
- 一般社団法人日本機械学会の論文
- 1992-03-15
著者
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Arai Masaaki
Faculty Of Technology Tokyo University Of Agriculture And Technology
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Tajima Kiyohiro
Department Of Mechanical Engineering Waseda University
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- Leakage-Flow-Induced Vibrations of an Axisymmetric Body : Part 1:Analysis of the Moment Acting on an Axisymmetric Body for Rotational Motion
- Leakage-Flow-Induced Vibrations of an Axisymmetric Body : Part2:Theories and Experiments on the Stability of an Axisymmetric Body for One Degree of Freedom of Rotational Motion
- Leakage-Flow-Induced Vibrations of an Axisymmetric Body : Analysis of the Fluid Dynamic Forces Exerted on an Axisymmetric Body