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以垂直提升管道的下管道支撑点为研究对象,用有限元方法对固液两相流输送过程中的流固耦合作用进行应力与位移计算。建立了管道和流体有限元模型,利用ADINA-FSI流固耦合模块进行求解;针对不同启动时间、不同约束条件、不同输送浓度、不同输送速度工况下管道铰接点的应力和位移进行分析。结果表明:随着两相流输送浓度和速度的增加,管道应力和位移也相应地增加;启动时间越短,管道应力和位移也越大;柔性连接时管道铰接点应力和位移远大于固接时的应力和位移。
Taking vertical pipe supporting points of vertical pipe as the research object, finite element method was used to calculate the stress and displacement of fluid-solid interaction in the process of solid-liquid two-phase flow. The finite element model of pipeline and fluid was established and solved by using ADINA-FSI fluid-solid coupling module. The stress and displacement of pipe joints under different conditions of start-up time, different restraint conditions, different conveying concentration and different conveying speed were analyzed. The results show that the stress and displacement of the pipeline increase with the increase of the transport velocity and the concentration of the two-phase flow. The shorter the startup time, the greater the stress and displacement of the pipeline. The stress and displacement of the pipeline hinge at the flexible connection are much larger than the fixed When the stress and displacement.