TY - GEN
T1 - NON LINEAR VIBRATIONS OF LOOSELY SUPPORTED TUBES EXCITED BY FLUIDELASTIC AND TURBULENCE FORCES
AU - Hadj-Sadok, C.
AU - Payen, T.
AU - De Langre, E.
N1 - Publisher Copyright:
© 1997 American Society of Mechanical Engineers (ASME). All rights reserved.
PY - 1997/1/1
Y1 - 1997/1/1
N2 - For predictive analysis of flow-induced vibration and wear of heat exchanger tubes, non linear computation of tube dynamics may be performed using adequate modelisation of the fluid forces. This paper presents computations of the response of loosely supported tube to fluidelastic forces and turbulence. Computations are performed using the time-domain dynamic equations, which are projected on the modal basis of the tube (Axisa et al, 1988, de Langre et al, 1992). The fluidelastic forces are modeled as reduced velocity dependent fluidstiffness and fluid-damping coefficients obtained with the Price and Paidoussis model. Random turbulence forces are estimated as function of flow rate from the experimentally measured power spectral density function (Axisa et al, 1990). A corrective methodology is proposed to account for the frequency dependence associated with fluid-stiffness and fluiddamping coefficients. Good agreement is obtained with computations using direct time dependent fluidelastic forces of the model.
AB - For predictive analysis of flow-induced vibration and wear of heat exchanger tubes, non linear computation of tube dynamics may be performed using adequate modelisation of the fluid forces. This paper presents computations of the response of loosely supported tube to fluidelastic forces and turbulence. Computations are performed using the time-domain dynamic equations, which are projected on the modal basis of the tube (Axisa et al, 1988, de Langre et al, 1992). The fluidelastic forces are modeled as reduced velocity dependent fluidstiffness and fluid-damping coefficients obtained with the Price and Paidoussis model. Random turbulence forces are estimated as function of flow rate from the experimentally measured power spectral density function (Axisa et al, 1990). A corrective methodology is proposed to account for the frequency dependence associated with fluid-stiffness and fluiddamping coefficients. Good agreement is obtained with computations using direct time dependent fluidelastic forces of the model.
UR - https://www.scopus.com/pages/publications/85127019359
U2 - 10.1115/IMECE1997-0112
DO - 10.1115/IMECE1997-0112
M3 - Conference contribution
AN - SCOPUS:85127019359
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
SP - 193
EP - 199
BT - 4th International Symposium on Fluid-Structure Interactions, Aeroelasticity, Flow-Induced Vibration and Noise
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 1997 International Mechanical Engineering Congress and Exposition, IMECE 1997 - 4th International Symposium on Fluid-Structure Interactions, Aeroelasticity, Flow-Induced Vibration and Noise
Y2 - 16 November 1997 through 21 November 1997
ER -