【摘要】：文章采用基于邊界瞬時(shí)渦量守候的拉格朗日方法(IVCBC),結(jié)合并列雙圓柱的特點(diǎn),建立了雙圓柱繞流數(shù)值計(jì)算模型。對(duì)高雷諾數(shù)下Re=6×10~4,間隙率為T(mén)/D=1.1~7的并聯(lián)圓柱雙圓柱二維繞流特性進(jìn)行了研究。提出了雙圓柱間隙中點(diǎn)的速度區(qū)別寬窄尾流的新方法。分別討論了流體力系數(shù)隨間距增加的特點(diǎn),脈動(dòng)流體力的特點(diǎn),尾流特征以及斯托哈爾數(shù)特征。研究發(fā)現(xiàn):區(qū)別寬窄尾流的新方法是可靠的;在雙圓柱尾流附近有五種尾流模型存在;同時(shí)發(fā)現(xiàn)了在寬窄尾流的頻率,存在一個(gè)中間頻率。
[Abstract]:In this paper, the Lagrangian method based on the instantaneous boundary vorticity observation is used to establish a numerical model for the flow around a double cylinder, combining with the characteristics of the parallel two cylinders. The two-dimensional flow characteristics of two parallel cylinders with Re=6 脳 10 ~ (4) and clearance ratio of T/D=1.1~7 at high Reynolds number are studied. A new method for differentiating wide and narrow wake at the midpoint of double cylindrical clearance is presented. The characteristics of flow force coefficient increasing with spacing, pulsating flow force, wake flow and Stohar number are discussed respectively. It is found that the new method to distinguish wide and narrow wake is reliable, that there are five kinds of wake models near the wake of two cylinders, and that there is an intermediate frequency in the frequency of wide and narrow wake.
【作者單位】： 大連理工大學(xué)工業(yè)裝備與結(jié)構(gòu)分析國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】：973資助項(xiàng)目(2013CB036101) 國(guó)家自然科學(xué)基金重點(diǎn)資助項(xiàng)目(51639003);國(guó)家自然科學(xué)基金項(xiàng)目(51679037,51279030) 高技術(shù)船舶專(zhuān)項(xiàng)資助
【分類(lèi)號(hào)】：O357.5

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