极限海浪环境下海洋平台立柱结构载荷及应力分析研究  

Analysis of load and stress on the column structure of offshore platform in the extreme wave environment

作　　者：曲森 任慧龙[3] 王希坤 史鸿博 QU Sen;REN Hui-long;WANG Xi-kun;SHI Hong-bo(Research Center of Fluid Machinery Engineering and Technology,Jiangsu University,Zhenjiang 212013,China;Wenling Fluid Machinery Technology Institute of Jiangsu University,Wenling 317522,China;College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]江苏大学流体机械工程技术研究中心,江苏镇江212013 [2]江苏大学流体机械温岭研究院,浙江温岭317522 [3]哈尔滨工程大学船舶工程学院,哈尔滨150001

出　　处：《船舶力学》2024年第11期1700-1709,共10页Journal of Ship Mechanics

基　　金：国家自然科学基金青年项目(52106043)。

摘　　要：本文利用开源计算流体力学软件OpenFOAM,数值模拟极限海浪环境下卷破波浪和非破碎波浪对海洋平台立柱的影响,目的是对比分析立柱在上述两种波浪类型下的波浪载荷及结构应力的变化情况。基于雷诺平均Navier-Stokes方程结合k-ωSST湍流模型对流体质点运动方程进行求解。通过数值结果发现,在相同设计波浪参数输入下,作用在海洋平台立柱上的卷破波浪载荷远远高于非破碎波浪载荷。立柱各个结构在非破碎波浪载荷作用下的最大应力值均小于材料的屈服极限。然而,在卷破波浪载荷作用下,部分结构受到的最大应力超过了材料的屈服极限,不满足结构安全要求。因此,在海洋结构物安全设计中需要考虑卷破波浪载荷对结构强度的影响,以确保结构具有足够的安全裕度。In this paper,the open-source computational fluid dynamics software OpenFOAM was used to simulate the effect of plunging breaker waves and non-breaking waves on the typical column of an offshore platform in the extreme ocean environment.The purpose was to compare and analyze the variation of wave loads and structural stress in the column under the above two wave types.The motion of the fluids was simu⁃lated based on the Reynolds-averaged Navier-Stokes equations combined with k-ωSST turbulence model.The numerical results show that the breaking wave load on the column is much higher than the non-breaking wave load under the same design wave parameter input.The maximum stress values for each structure of the column under non-breaking wave loads are less than the yield limit of material.However,under the plunging breaker load,the maximum stress of some structures exceeds the yield limit of materials and cannot meet the requirements of structural safety.Therefore,the impact of breaking wave load on structural strength should be considered in the safety design of marine structures to ensure that the structure has sufficient safety margins.

关 键 词：卷破波浪 雷诺平均Navier-Stokes方程 湍流模型 破碎波浪载荷 海洋平台 

分 类 号：TV131.2[水利工程—水力学及河流动力学]