单向流作用下伞式吸力锚基础的冲刷特征Scour Characteristics of Umbrella Suction Anchor Foundation Under Single Current
刘红军,潘光来,曹磊
摘要(Abstract):
伞式吸力锚(USAF)是一种新型的海上风电基础,与单桩基础相比,吸力锚基础(SAF)局部冲刷对风机稳定性的影响更为显著。因此,研究其冲刷特性对海上风电项目的建设具有重要意义。本文基于FLOW-3D软件,采用VOF法描述水体自由面,移动网格捕获冲刷形态随时间的变化,建立了三维USAF冲刷模型,并且与冲刷模型试验对比,验证了模型的可靠性。通过固定欧拉网格求解Navier-Stokes方程,得到了单向流作用下伞式吸力锚和普通吸力锚的冲刷范围,形态以及冲刷深度。结果表明USAF相比SAF具有一定的防冲刷能力,两者的冲刷特征差异显著,其中最大冲刷深度相差一个量级。
关键词(KeyWords): 海上风机;伞式吸力锚;局部冲刷;单向流
基金项目(Foundation): 国家自然科学基金项目(41572247);; 山东省科技攻关项目(2014GGX104007)资助~~
作者(Author): 刘红军,潘光来,曹磊
DOI: 10.16441/j.cnki.hdxb.20180257
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