期刊文献+

3种附属管排布方式对主管路水动力特性的影响

Influence of Three Arrangement Modes of Auxiliary Pipes on Hydrodynamic Characteristics of Main Line
下载PDF
导出
摘要 【目的】研究均匀流多管束干涉流动下圆柱受迫振动的水动力特性。【方法】基于SSTκ-ω模型,在亚临界雷诺数下(Re=1×10^(5))对多管束共振强迫的涡激振动问题进行二维数值模拟,比较与分析三种典型附属管排布方式对主管路流体动力学特征的影响。【结果与结论】采用模型3下的附属管排布方式可在较大范围的振幅比下(A_(y)/D=0.1~0.8)有效改善主管路水动力特性:1)有效降低主管路上平均升力系数的幅值;2)抑制在单管路系统中出现的脉动升力系数突变衰减。同时,由于多管束对流动产生干涉效应,主管路上表现的尾迹涡度随着振动幅度的增大而呈现出不同的模式。此外,功率谱密度分析发现,多管束系统相较于单圆柱系统,在频率比为1时,模型2与模型3的共振“锁定”状态得到改善。 【Objective】The study is to investigate the hydrodynamic characteristics of cylinder subjected to forced vibration under the interference flow of multiple bundles with uniform flow.【Method】Based on SSTκ-ωmodel,under subcritical Reynolds number(Re=1×10^(5)),a two-dimensional numerical simulation of the vortex-induced vibration problem of multi-tube bundle resonance was carried out,and the influence of three typical auxiliary tube arrangement methods on the hydrodynamic characteristics of the main pipeline were compared【Result and Conclusion】The arrangement of auxiliary pipes under Model 3 can effectively improve the hydrodynamic characteristics of the main line at a wide range of amplitude ratios(A_(y)/D=0.1-0.8):1)Effectively reduce the average lift coefficient of the main line;2)Suppress the sudden attenuation of the pulsating lift coefficient in the single-piping system.Meanwhile,due to the interference effect of the multi-tube bundle on the flow,the wake vorticity of the main pipe shows different patterns with the increase of vibration amplitude.In addition,Power Spectral Density analysis shows that the resonance“lock-in”state of Model 2 and Model 3 of the multi-bundle system is improved when the frequency ratio is 1,compared with the single-cylinder system.
作者 黄技 王成彦 巫凯旋 陶韵如 赵远溥 尹辉 HUANG Ji;WANG Cheng-yan;WU Kai-xuan;TAO Yun-ru;ZHAO Yuan-pu;YIN Hui(College of Ocean Engineering;Maritime College,Guangdong Ocean University,Zhanjiang 524005,China)
出处 《广东海洋大学学报》 CAS 北大核心 2022年第1期127-136,共10页 Journal of Guangdong Ocean University
基金 广东海洋大学大学生创新创业训练计划项目(CXXL2021302) 2020年广东省促进经济高质量发展专项(军民融合发展) 湛江市非资助科技攻关专题(2020B01416)。
关键词 涡激振动 受迫振动 水动力特性改善 多管束排布方式 重叠网格 vortex induced vibration forced oscillation improved hydrodynamic characteristics multi-tube bundle arrangement overset mesh
  • 相关文献

参考文献9

二级参考文献67

  • 1陈志乐,刘桦.床面上直立圆柱绕流问题的湍流模型比较[J].水动力学研究与进展(A辑),2008,23(6):633-638. 被引量:12
  • 2徐元利,徐元春,梁兴,张进国.FLUENT软件在圆柱绕流模拟中的应用[J].水利电力机械,2005,27(1):39-41. 被引量:28
  • 3王革,赖国璋,李玉成,王晓明.有限元-有限差分法对振荡流加任意方向均匀来流中圆柱绕流的数值模拟分析[J].水动力学研究与进展(A辑),1994,9(2):224-233. 被引量:5
  • 4凌国平,凌国灿.圆柱振荡绕流中涡旋运动模式(pattern)的数值模拟[J].计算物理,1996,13(1):73-78. 被引量:2
  • 5Bisho R E D, Hassan A Y. The lift and drag forces on a circular cylinder oscillating in a flowing fluid[A]. Proceedings of the Royal Society of London [C]. 1964, Series A 277..51-75.
  • 6Sarpkaya T. Fluid forces on oscillating cylinders[J]. Journal of the Waterway, Port, Coastal and Ocean Division, Proceedings of the American Society of Civil Engineers, 1978, 104(4) :275-290.
  • 7Williamson C H K, Roshko A. Vortex formation in the wake of an oscillating cylinder[J]. Journal of Fluids and Structures, 1988, 2(4) :355-381.
  • 8Carberry J, Sheridan J, Rockwell D. Controlled os- cillations of a cylinder., forces and wake modes [J]. Journal of Fluid Mechanics, 2005,538.. 31-69.
  • 9Gopalkrishnan R. Vortex-induced forces on oscilla- ting bluff cylinders[D]. Department of Ocean Engi- neering, MIT, 1993.
  • 10Sarpkaya T, Shoaff R L. A discrete vortex analysis of flow about stationary and transversely oscillating circular cylinders[R]. Technical Report 1979: No. NPS-69SL79011, Naval Postgraduate School, Monter- ey, Cal. , USA.

共引文献52

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部