TY - GEN
T1 - Linearized potential flow theory applied to the calculation of fluidelastic forces in annular flow configurations
AU - de Langre, E.
AU - Belanger, F.
AU - Porcher, G.
PY - 1992/12/1
Y1 - 1992/12/1
N2 - We consider in this paper a method for calculating the unsteady fluid forces acting on vibrating, fluid-coupled structures by means of linearized potential flow theory. The fluid-elastic forces and expressions for the added mass, added damping and added stiffness are obtained. Considering the fluid-dynamic damping terms, it is shown that no flutter instability of the fluid-structure system is possible if the wall portions located at the inlet and outlet of the fluid domain are fixed. In that respect, special attention is given to the treatment of the boundary conditions, their importance being highlighted by analysis of an unsteady annular flow problem, the results of which have been obtained using a finite element code and compared against experimental data, showing the applicability of the formulation.
AB - We consider in this paper a method for calculating the unsteady fluid forces acting on vibrating, fluid-coupled structures by means of linearized potential flow theory. The fluid-elastic forces and expressions for the added mass, added damping and added stiffness are obtained. Considering the fluid-dynamic damping terms, it is shown that no flutter instability of the fluid-structure system is possible if the wall portions located at the inlet and outlet of the fluid domain are fixed. In that respect, special attention is given to the treatment of the boundary conditions, their importance being highlighted by analysis of an unsteady annular flow problem, the results of which have been obtained using a finite element code and compared against experimental data, showing the applicability of the formulation.
UR - https://www.scopus.com/pages/publications/0026977089
M3 - Conference contribution
AN - SCOPUS:0026977089
SN - 0791810828
T3 - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
SP - 187
EP - 204
BT - Axial and Annular Flow-Induced Vibration and Instabilities
PB - Publ by ASME
T2 - Winter Annual Meeting of the American Society of Mechanical Engineers
Y2 - 8 November 1992 through 13 November 1992
ER -