TY - GEN
T1 - Parameter analysis of vortex-induced vibrations through numerical simulation
AU - He, Changjiang
AU - Duan, Zhongdong
AU - Ou, Jinping
PY - 2010
Y1 - 2010
N2 - By applying an overlapping mesh, a vortex-induced vibration (VIV) model was constructed and the effect of several key factors on VIV: mass ratio m *, Reynolds number Re and, reduced velocity Vr = U/fND was investigated. By assuming A/D = f(m*, Re, Vr), parameter analysis was taken about influence of the three parameters on A/D, and especially, the two terms of Cl which is in phase with velocity (Clv) or is in phase with acceleration (C la) are computed respectively, the contours of them were plotted. It was found that the maximum cross-flow amplitudes are 3∼6 times of those in in-line direction. Response and fluid forces achieve their peak values as V r is around 6∼7 and Re is about 2.2×104, inside the so-called concentrate area, Re has a linear influence on A/D, but outside, Re has little effect on them. On the other hand, Vr basically has linear influence on Clv, Cla, while Re has slight effect on them.
AB - By applying an overlapping mesh, a vortex-induced vibration (VIV) model was constructed and the effect of several key factors on VIV: mass ratio m *, Reynolds number Re and, reduced velocity Vr = U/fND was investigated. By assuming A/D = f(m*, Re, Vr), parameter analysis was taken about influence of the three parameters on A/D, and especially, the two terms of Cl which is in phase with velocity (Clv) or is in phase with acceleration (C la) are computed respectively, the contours of them were plotted. It was found that the maximum cross-flow amplitudes are 3∼6 times of those in in-line direction. Response and fluid forces achieve their peak values as V r is around 6∼7 and Re is about 2.2×104, inside the so-called concentrate area, Re has a linear influence on A/D, but outside, Re has little effect on them. On the other hand, Vr basically has linear influence on Clv, Cla, while Re has slight effect on them.
KW - Added mass
KW - Numerical simulation
KW - Overlapping grid
KW - Vortex-induced vibration
UR - https://www.scopus.com/pages/publications/77956312079
M3 - 会议稿件
AN - SCOPUS:77956312079
SN - 9781880653777
T3 - Proceedings of the International Offshore and Polar Engineering Conference
SP - 1107
EP - 1114
BT - Proceedings of the 20th (2010) International Offshore and Polar Engineering Conference, ISOPE-2010
T2 - 20th International Offshore and Polar Engineering Conference, ISOPE-2010
Y2 - 20 June 2010 through 25 June 2010
ER -