TY - JOUR A2 - Kolahchi, Reza AU - Chang, Xueping AU - Fan, Jinming AU - Yang, Wenwu AU - Li, Yinghui PY - 2021 DA - 2021/02/17 TI - In-Line and Cross-Flow Coupling Vibration Response Characteristics of a Marine Viscoelastic Riser Subjected to Two-Phase Internal Flow SP - 7866802 VL - 2021 AB - This paper studies the in-line and cross-flow coupling vibration response characteristics of a marine viscoelastic riser subjected to two-phase internal flow and affected by the combined effects of several parameters including the volume fraction of gas phase, sea water flow velocity, viscoelastic coefficient of the marine riser, axial tension amplitude, and the in-line and cross-flow coupling effect taking into account both the geometric and hydrodynamic nonlinearities.扩展汉密顿开放系统原理基础确定受轴压和气液结构交互作用约束的海洋粘结立方程双分布并联动范德波休眠器分别用于模拟浮动提升系数和拖动系数有限元素法直接解决高联通非线性流体结构交互方程模型验证首先通过与发布实验数据和数值模拟结果进行比较,并分别获取线内和交叉振荡模式特征曲线、线内和交叉移位轨迹、线内和交叉移位时响应和线内和跨流间应变时响应结果表明,气相量分量、海水流速、海洋立方相容系数、轴拉大、内流和交叉流相联效应和多相内部流速度对海洋粘和器动态响应特征有重大影响。此外,视内部流速而定,海洋粘积立体的最大置换和压力可增减,关键内部流速可增量或减速,而关键内部流速可增量不同流速模式序事实还证明,适当的粘合系数对有效抑制最大偏移和压力非常重要。SN-1070-9622UR-https://doi.org/101155/2021/786802DO-10.1155/2021/786802JF-震荡和振荡PB-HindawiKW-ER-