Variation of added mass and its application to the calculation of amplitude response for a circular cylinder
Data(s) |
2007
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Resumo |
In the present study, analyzed are the variation of added mass for a circular cylinder in the lock-in ( synchronization) range of vortex-induced vibration (VIV) and the relationship between added mass and natural frequency. A theoretical minimum value of the added mass coefficient for a circular cylinder at lock-in is given. Developed are semi-empirical formulas for the added mass of a circular cylinder at lock-in as a function of flow speed and mass ratio. A comparison between experiments and numerical simulations shows that the semi-empirical formulas describing the variation of the added mass for a circular cylinder at lock-in are better than the ideal added mass. In addition, computation models such as the wake oscillator model using the present formulas can predict the amplitude response of a circular cylinder at lock-in more accurately than those using the ideal added mass. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
China Ocean Engineering.2007,21(3):429-437 |
Palavras-Chave | #Vortex-Induced Vibration #Added Mass #Lock-In #Mass Ratio #Natural Frequency #Vortex-Induced Vibrations #Induced Oscillation #Fluid Forces #Prediction #Frequency |
Tipo |
期刊论文 |