摘要
通过数值模拟方法与物理模型实验,对不同间隙比情况下的海底管线绕流特性进行研究。数值模拟采用有限差分法对标准k-ε湍流方程和控制方程进行离散,利用GMRES算法求解离散方程,模拟绕流流场。物理模型实验中采用超声测速仪ADV系统测取不同断面的流速分布情况,分别分析不同间隙比情况下的漩涡运动特性。同时分析各垂直断面不同间隙比时尾流流速变化情况,数值模拟结果与实验结果吻合较好,本文成果为进一步研究海底管线的防护措施打下基础。
The characteristics of flows around the submarine pipeline at various gap-ratios are studied by the numerical and experimental approaches. The 2-D numerical model which uses finite difference method to discrete the standard/e-e turbulence equations and governing equations is solved by Generalized Minimum RESidual （GMRES） algorithm . In the experiments, the velocity of cross-sections are investigated by ADV. The characteristics of vortex at various gap-ratios were analyzed. In addition, the velocity changes of wake flow were studied at different gap-ratios. The simulation result is agreement with the experi mental result. The achievement in this paper sets the stage for the research on the submarine pipeline＇s protective measurements.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第9期90-94,108,共6页
Periodical of Ocean University of China
基金
国家高技术研究发展计划项目(2008AA09Z309)
国家自然科学基金项目(50879084)资助
关键词
海底管线绕流
间隙比
有限差分法
尾流
flow around submarine pipeline
gap ratio
finite difference method
wake flow
