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海底管线附近底床侵蚀稳定性的湍流数值模拟判别 被引量:2

Analysis for Scour Stability of Seabed around Submarine Pipelines by Numerical Simulation of Turbulence
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摘要 本文基于粘性流体理论采用NEW K-ε双方程湍流模式对复杂底床形态情况下的海底管线附近流场进行了数值模拟,计算结果显示NEW K-ε湍流模型能够较好的模拟出管线后方的涡旋以及分离、脱落趋势.在流场数值模拟结果的基础上,本文进一步计算了管线附近底床的壁面剪切应力,并结合相应的泥沙临界起动切应力判据对其进行了侵蚀稳定性判别.稳定性分析结果与已有成果的比较显示:本文的方法正确、可靠并具有能够揭示侵蚀机理和细微部位侵蚀情况等优点.同时,本文也对管线附近底质具有粘性特征以及固结作用的情况进行了有益的探讨.
作者 吕林 李玉成
出处 《中国造船》 EI CSCD 北大核心 2003年第z1期340-349,共10页 Shipbuilding of China
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