Study on Bearing Capacity of River Structure Using Fluid-solid Coupling Method
-
摘要: 利用有限元软件ANSYS中的流体计算模块CFX和Workbench平台对受流体作用的河道内构筑物进行了流固耦合分析,显著减少使用以往理论公式带来的计算误差,精确、有效地对模型进行了仿真。通过CFX计算求得流体作用力,然后利用Workbench将其以插值方式传递到构筑物上进行固体分析计算,最后得到物体在流体作用下的变形和应力分布。分析了高雷诺数下,圆柱自由表面绕流模型作用在柱身上的流体作用大小和分布状态。结果表明:流体压力沿高度方向近似线性增长,沿圆柱截面方向先减小后增大。Abstract: The fluid-solid coupling of the river structure was analyzed utilizing the computational fluid module CFX and the Workbench platform in Ansys software. The coupling analysis method in this paper could simulate the modal accurately and effectively,and reduce the calculation error significantly compared with the previous theoretical formula methods. In this method,the fluid force was calculated through CFX; then Workbench delivered the fluid force to the structure by the interpolation method; finally the deformation and stress distributions of the structure were obtained through solid mechanics analysis. This paper also analyzed the size and distribution of the fluid force that acts on the pillar which has the high Reynolds number and free surface flow around cylinder. The result shows the fluid pressure increases approximately linear along the height of the pillar,and decreases firstly then increases along the cylindrical section.
-
Key words:
- bearing capacity /
- calculations /
- computational fluid dynamics /
- computer simulation /
- computer software
-
[1] Zhu Q J,Chen Y H,Liu T Q,et al. Journal of CentralSouth University of Technology,2008,(z1): 307-310 [2] Tian L,Zhang J Y,Zhang W H. An improved algorithm for fluld-structure interaction of high-speed trains under crosswind[J]. Journal of Modern Transportation,2011,19(2): 75-81 [3] 吴言超,陆晓峰.低雷诺数圆柱绕流特性的数值模拟[J].大庆石油学院学报,2011,(5): 73-78 Wu Y C,Lu X F. The numerical simulation of the low reynolds number flow around cylinder characteristics[J]. Journal of Daqing Petroleum Institute,2011,(5): 73-78 (in Chinese) [4] 丁代伟.圆柱绕流及涡激振动的二维数值模拟[D].天津大学,2010: 21-25 Ding D W. Two-dimensional numerical simulation of flow around a cylinder and vortex-induced vibration[D].Tianjin: Tianjin University,2010: 21-25 (in Chinese) [5] 余攀登,赵广惠,王飞.高雷诺数下近壁圆柱绕流数值模拟与分析[J].海洋石油,2012,(2): 102-105 Yu P D,Zhao G H,Wang F. High reynolds number close to the wall of cylindrical flow numerical simulation and analysis[J]. Journal of Marine Oil,2012,(2): 102-105 (in Chinese) [6] 宋学官,蔡林,张华.ANSYS 流固耦合分析与工程实例[M].北京: 中国水利水电出版社,2012 Song X G,Cai L,Zhang H. ANSYS fluid-structure interaction analysis and practical engineering [M]. Beijing:China Water Conservancy and Hydropower Press,2012 (in Chinese) [7] Zou L,Lin Y F,Kit L. Large-eddy simulation of flow around cylinder arrays at a subcritical reynolds number[J].Journal of Hydrodynamics,2008,(4): 403-413 [8] 张阿漫,戴绍仕.流固耦合动力学[M].北京: 国防工业出版社,2011: 116-117 Zhang A M,Dai S S. Fluid-structure interaction dynamics[M]. Beijing:National Defence Industry Press,2011: 116-117 (in Chinese) [9] 李鹏飞,徐敏义,王飞飞.精通 CFD 工程仿真与案例实战[M].北京: 人民邮电出版社,2011: 197-198 Li P F,Xu M Y,Wang F F. Proficient in CFD simulation and case of actual combat[M]. Beijing: People' s Posts and TelecoMmunications Publishing House,2011: 197-198 (in Chinese) [10] 毕继红,于华军,任洪鹏.静止方柱和圆柱绕流的二维数值分析[J].三峡大学学报,2012,(1): 41-45 Bi J H,Yu H J,Ren H P. Static square column and two dimensional numerical analysis of flow around cylinder[ J].Journal of Three Gorges University,2012,(1): 41-45 (in Chinese) [11] Khalid S S,Zhang L,Zhang X W,et al. Journal of Zhejiang University-Science A,2013,(8): 575-582
点击查看大图
计量
- 文章访问数: 128
- HTML全文浏览量: 25
- PDF下载量: 2
- 被引次数: 0