附加附屬管的隔水管渦激振動(dòng)離散渦模擬
本文選題:圓柱繞流 + 離散渦; 參考:《水動(dòng)力學(xué)研究與進(jìn)展(A輯)》2016年05期
【摘要】:該文采用離散渦數(shù)值方法,對(duì)附加附屬管的隔水管渦激振動(dòng)問題進(jìn)行了模擬。計(jì)算了配置4 10根附屬管情況下隔水管渦激振動(dòng)問題,將附加附屬管后隔水管的受力系數(shù)、振幅與裸管的結(jié)果進(jìn)行比較,同時(shí)也研究了不同來流攻角對(duì)附屬管渦激振動(dòng)的影響。結(jié)果表明,附加附屬管后隔水管振幅與裸管相比,受力系數(shù)與振幅均有不同程度地減小,對(duì)隔水管渦激振動(dòng)的抑制效果明顯。不同數(shù)量的附屬管對(duì)來流攻角的敏感性也各不相同,附加6、8和10根附屬管都有很好的抑制效果,其中附加10根附屬管對(duì)隔水管的抑制效果最好,減幅約達(dá)到50%,且對(duì)來流攻角的敏感性也最低。
[Abstract]:In this paper, a discrete vortex numerical method is used to simulate the vortex-induced vibration of a riser with attached tubes. In this paper, the vortex-induced vibration of the riser under the condition of 4 or 10 attached tubes is calculated. The stress coefficient and amplitude of the riser are compared with the results of the bare tube. At the same time, the influence of different attack angles on the vortex-induced vibration of the attached tube is also studied. The results show that the stress coefficient and amplitude of the riser are decreased in varying degrees compared with the bare tube, and the effect on the vortex induced vibration of the riser is obvious. The sensitivity of different numbers of adnexal tubes to the angle of attack was also different. The addition of 6 or 10 additional tubes had good inhibitory effect on the riser, and the addition of 10 additional tubes had the best inhibitory effect on the riser. The reduction is about 50 and the sensitivity to the angle of attack is the lowest.
【作者單位】: 上海交通大學(xué)船舶海洋與建筑工程學(xué)院;中國(guó)工程熱物理研究院流體物理所;
【基金】:國(guó)家自然科學(xué)基金(11372188) 國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(2015CB251203)~~
【分類號(hào)】:P756.2
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