TY - JOUR
T1 - Modal characteristics of a flexible cylinder in turbulent axial flow from numerical simulations
AU - De Ridder, Jeroen
AU - Degroote, Joris
AU - Van Tichelen, Katrien
AU - Schuurmans, Paul
AU - Vierendeels, Jan
A2 - Keijers, Steven
N1 - Score = 10
PY - 2013/11
Y1 - 2013/11
N2 - In this paper the vibration behavior of a flexible cylinder subjected to an axial flow is investigated numerically. Therefore a methodology is constructed, which relies entirely on fluid–structure interaction calculations. Consequently, no force coefficients are necessary for the numerical simulations. Two different cases are studied. The first case is a brass cylinder vibrating in an axial water flow. This calculation is compared to experiments in literature and the results agree well. The second case is a hollow steel tube, subjected to liquid lead–bismuth flow. Different flow boundary conditions are tested on this case. Each type of boundary conditions leads to a different confinement and results in different eigenfrequencies and modal damping ratios. Wherever appropriate, a comparison has been made with an existing theory. Generally, this linear theory and the simulations in this paper agree well on the frequency of a mode. With respect to damping, the agreement is highly dependent on the correlation used for the normal friction coefficients in the linear theory.
AB - In this paper the vibration behavior of a flexible cylinder subjected to an axial flow is investigated numerically. Therefore a methodology is constructed, which relies entirely on fluid–structure interaction calculations. Consequently, no force coefficients are necessary for the numerical simulations. Two different cases are studied. The first case is a brass cylinder vibrating in an axial water flow. This calculation is compared to experiments in literature and the results agree well. The second case is a hollow steel tube, subjected to liquid lead–bismuth flow. Different flow boundary conditions are tested on this case. Each type of boundary conditions leads to a different confinement and results in different eigenfrequencies and modal damping ratios. Wherever appropriate, a comparison has been made with an existing theory. Generally, this linear theory and the simulations in this paper agree well on the frequency of a mode. With respect to damping, the agreement is highly dependent on the correlation used for the normal friction coefficients in the linear theory.
KW - Flow-induced vibrations
KW - Fluid–structure interaction
KW - Eigenmode
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_140472
UR - http://knowledgecentre.sckcen.be/so2/bibref/12931
U2 - 10.1016/j.jfluidstructs.2013.09.001
DO - 10.1016/j.jfluidstructs.2013.09.001
M3 - Article
SN - 0889-9746
VL - 43
SP - 110
EP - 123
JO - Journal of Fluids and Structures
JF - Journal of Fluids and Structures
ER -