针对深海立管涡激振动流场建立计算模型,分析了第一层网格高度、网格数量、时间步长对深海立管涡激振动DES模拟的升力系数、阻力系数、斯特罗哈尔数的影响,通过与文献中实验、计算数据的对比,说明SST k-ω湍流模型基础上的DES方法模拟低雷诺数深海立管涡激振动准确合理;网格第1层高度对计算精度影响较大,按0.51确定DES方法的第1层网格高度可得到满足要求的。
DES (Detached Eddy Simulation) method was used to simulate vortex induced vibration of smooth marine riser. The height of first layer of the grid and Grid-independent solution and time step-independence solution is obtained. The lift coefficient, the drag coefficient, Strouhal number (St) and other results agree well with experimental data and other numerical results. The results show that, DES method based on SST k-ω turbulence model is credible and valid to simulate vortex induced vibration of smooth marine riser; the requirement of the first layer of the grid can be satisfied by 0.5Δy1.
2016,38(3): 128-133 收稿日期：2015-03-30
DOI：10.3404/j.issn.1672-7619.2016.03.027
分类号：O353.1
基金项目：北京市教育委员会科技计划科研项目(KM201411232015);北京市属高等学校创新团队建设与教师职业发展计划项目(IDHT20130519);北京信息科技大学开放实验室课题(ICDD2015)资助
作者简介：朱敏玲(1979-),女,博士,讲师,主要从事计算机仿真及嵌入式领域研究。
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