学术论文

      带舭龙骨柱体的横摇阻尼的粘性流计算

      Prediction of Roll Hydrodynamics of Cylinders Fitted with Bilge Keels with RANS

      摘要:
      文章用RANSE求解器计算在自由面上带舭龙骨二维柱体的横摇水动力系数(附加惯量和阻尼).采用有限体积法(VOF)和两相流技术在时间域内求解柱体横摇强迫振荡所扰动的带自由面粘性流场.由柱体所受到的横摇水动力矩的时间历程导出横摇水动力系数.文中所给算例与已公开发表的试验结果吻合令人满意.
      Abstract:
      An RANS solver is used to predict roll hydrodynamic coefficients (added inertia moment and damping) of a two-dimensional section with/without bilge keels on the free surface. The viscous flow field disturbed by the forced roll motion is solved in time domain with VOF and two-phases flow approach. The roll hydrodynamic coefficients are derived from time histories of the roll hydrodynamic moments. The results are compared with published model test measurements and a fairly good agreement was found.
      Author: XIE Nan Dracos VASSALOS B.S.LEE
      作者单位: 英国Glasgow and Strathclyde大学船舶工程系
      刊 名: 船舶力学 EIPKU
      年,卷(期): 2007, 11(6)
      分类号: U661.32
      机标分类号: U66 TU8
      在线出版日期: 2008年4月14日
      基金项目: the EU 6th Framework Programme under VIRTUE project