中南大学学报（自然科学版）2016，Vol.47Issue(11)：3670-3676,7.DOI:10.11817/j.issn.1672-7207.2016.11.008
考虑流固耦合的深海采矿长输流硬管力学行为
Mechanical characteristics on long lifting pipeline in deep-ocean mining considering fluid-structure interaction
摘要
Abstract
The influence of pipe length and top tension on the natural frequency of lifting pipeline was investigated based on the finite element model of fluid-structure interaction with Workbench software. In order to examine the influence of internal fluid velocity, internal fluid density and outflow velocity on the mechanical characteristics of lifting pipeline, dynamic simulations of fluid-structure interaction of lifting pipeline under the action of internal fluid and outflow were carried out. The results show that the natural frequency of lifting pipeline increases with the increase of top tension and the decrease of pipe length. With the impact of internal fluid, the maximum lateral displacement and the maximum principal stress of lifting pipeline increase with the increase of the velocity and density of the internal fluid. Under the influence of outflow, the maximum lateral displacement and the maximum principal stress of lifting pipeline increase with the increase of the velocity of the outflow. In order to ensure the safety and improve the efficiency of the lifting system, the velocity of the internal fluid must be controlled in suitable range (e.g. 2.5−3.5 m/s). The deep-ocean mining system should work with the velocity of outflow less than 0.8 m/s.关键词
深海采矿/扬矿硬管/流固耦合/力学行为Key words
deep-ocean mining/lifting pipeline/fluid-structure interaction/mechanical characteristics分类
矿业与冶金引用本文复制引用
李艳,贾广成,刘少军..考虑流固耦合的深海采矿长输流硬管力学行为[J].中南大学学报（自然科学版）,2016,47(11):3670-3676,7.基金项目
国家自然科学基金资助项目(51104177)；国家高技术研究发展计划(863计划)项目(2012AA091201)(Project(51104177) supported by the National Natural Science Foundation of China （51104177）
Project(2012AA091201) supported by the National High Technology Research and Development Program (863 Program) of China) （2012AA091201）
