内孤立波环境下圆柱和方柱受力特征——Ⅰ.物理实验

发布时间：2018-04-22 23:26

  本文选题：内孤立波 + 圆柱　； 参考：《水科学进展》2017年03期

【摘要】：随着近岸海洋的开发,海洋石油钻井平台底部的柱状支撑以及海洋中石油管线等水下结构物的安全问题受到的关注日益增多。而内孤立波对水下结构物的安全有着不可忽视的影响,这就决定了内孤立波对柱体受力的研究在工程实践中具有重要意义。国内外就内孤立波对柱体作用力的物理试验研究较少,而在分层流环境下圆柱和方柱受力规律的对比研究更鲜有报道。在大型重力式分层流试验水槽中,借助一套新型且专用于分层流环境下的内孤立波造波及水动力测力系统,进行了内孤立波环境下柱体受力规律的试验研究。对比分析了不同内孤立波波幅对圆柱和方柱受力的作用规律。研究表明,在分层流环境下,随着内孤立波波幅的增大,圆柱和方柱所受的水平作用力均增大;相同波幅情况下,方柱相较于圆柱会受到更大的水平力。研究成果可为分层流环境中柱体设计及安全评价提供科学依据。
[Abstract]:With the development of offshore ocean, the safety of underwater structures such as the bottom of the offshore oil drilling platform and the oil pipelines in the ocean have been paid more and more attention, and the internal solitary waves have no negligible influence on the safety of underwater structures, which determines the study of the internal solitary waves on the force of the cylinder in engineering practice. It is of great significance. There are few physical tests on the internal solitary waves on the force of the cylinder, and the comparative study of the force law of cylindrical and square columns in the stratified flow environment is rarely reported. In a large gravity stratified flow test tank, a new set of internal solitary waves and hydrodynamic forces used in a laminar flow environment are used. The force system of the cylindrical and square columns under the internal isolated wave environment is tested and studied. The effects of the internal solitary wave amplitude on the force of the cylinder and the square column are compared and analyzed. The study shows that the horizontal force of the cylinder and square column increases with the increase of the amplitude of the internal solitary wave in the stratified flow environment. The column will be subjected to more horizontal force than the cylinder. The research results can provide a scientific basis for cylinder design and safety evaluation in the stratified flow environment.

【作者单位】： 河海大学水文水资源与水利工程科学国家重点实验室;河海大学水利水电学院;南昌工程学院水利与生态工程学院;解放军理工大学气象海洋学院;
【基金】：国家自然科学基金资助项目(51479058) 高等学校学科创新引智计划资助项目(B17015)~~
【分类号】：TE951
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本文编号：1789436