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考虑内流作用利用功能原理建立顶张力立管涡激振动响应数值模型,采用尾流振子模型模拟涡激振动升力,利用Hermit插值函数将其离散得到立管振动响应的矩阵方程形式,运用Newmark-β法在时域内迭代求解其动力响应。在山东省海洋工程重点实验室进行了阶段流作用下的大长细比海洋立管涡激振动试验,对比数值模拟和试验结果表明该模型对于考虑内流作用的大长细比海洋立管涡激振动响应预报是有效的,为深水立管涡激振动研究提供一定的借鉴。
Abstract：A numerical model of the Top Tension Riser's Vortex-Induced Vibration is developed by using the function principle and considering the internal flow,the wake oscillator model is adopted to simulate the lift of Vortex-Induced Vibration and a matrix equation form of the numerical model is derived by using Hermit interpolation function,the method of Newmark-βis used to solve its dynamic response.An experiment of the Vortex-Induced Vibration of Marine riser with large aspect ratio under stepped current is conducted in the key laboratory of ocean engineering of Shandong province,it shows that the numerical model is effective in predicting the vortex-induced vibration of Marine riser with large aspect ratio and considering the internal flow by comparing the numerical simulations with experiment results,also it can provide some references to study the Vortex-Induced Vibration of Deepwater Riser.
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基本信息:
DOI：10.16441/j.cnki.hdxb.20130276
中图分类号:P756.2;TE973
引用信息:
[1]郭海燕,牛建杰,李效民,等.海洋立管涡激振动模型的实验验证[J],2015,45(06):108-115.DOI:10.16441/j.cnki.hdxb.20130276.
基金信息:
国家高技术研究发展计划项目(2010AA09Z303);; 国家自然科学基金项目(51279187)资助