狗骨头扰流装置对海洋立管涡激振动抑制的数值模拟研究

摘要

按照流体力学基本理论，将抑制风振的狗骨头型装置引进到抑制海洋立管的涡激振动上，并采用ANSYS CFX三维流固耦合方法对该装置的抑制效果进行检验。数值模拟检验结果表明：该抑振装置不仅有效降低了横向涡激振动响应，而且也抑制了纵向激励。%A dog bones type of suppression device which can inhibit wind vibration was introduced into the marine riser to suppress the vortex-induced vibration ( VIV) , based on fluid mechanics theory and the three-dimensional numerical test by Ansys CFX.The results showed that the vibration suppression device of spherical rib can reduce not only the lateral response but also the downstream response .