考虑载荷效应的三维颗粒冲蚀数值模拟  

Numerical Simulation of Three-dimensional Particle Erosion with Consideration of Loading Effect

作　　者：王华昆[1] 余建星[1,2] 余杨[1] 韩翔希[2] 李修波 樊志远 WANG Huakun;YU Jianxing;YU Yang;HAN Xiangxi;LI Xiubo;FAN Zhiyuan(State Key Laboratory of Hydraulic Engineering Simulation and Safety.Tianjin University,Tianjin 300072,China;Qinzhou University,Qinzhou 535099,China;CRRC SMD(Shanghai)Ltd.,Shanghai 201360,China;China Shipbuilding Industry Economics and Market Research Center,Beijing 100081,China)

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300072 [2]钦州学院机械与船舶海洋工程学院,钦州535099 [3]上海中车艾森迪海洋装备有限公司,上海201360 [4]中国船舶工业经济与市场研究中心,北京100081

出　　处：《中国造船》2019年第4期66-72,共7页Shipbuilding of China

摘　　要：冲蚀是管道失效的主要原因之一,论文采用数值模拟研究了拉伸应力对冲蚀演化的影响。基于COMSOL Multiphysics软件首次开发了一套完整的考虑外加拉伸载荷的三维平板冲蚀数值模拟方法。该方法可用于分析高压油气输送管道的固体颗粒冲蚀问题,可将内部高压流体引起的管壁拉伸载荷对冲蚀损伤演化的影响纳入考虑。结合自定义的应力-冲蚀方程,论文分析了冲射角(θ)、冲射速度(V)以及表面冲蚀损伤疤痕对应力-冲蚀损伤演化过程的影响,研究表明:在稀相流下,随着冲射角增大,最大冲蚀损伤出现在45°冲射角,最大冲蚀损伤速率随冲射速度增加呈指数增长,由于冲蚀疤痕影响流场和靶材应力分布,其对冲蚀损伤演化过程的影响不可忽略。Erosion is the main cause of pipeline failure.In this paper,influence of tensile stress on erosion evolution was analyzed.A three-dimensional numerical simulation method of stress-erosion on plate was developed for the first time based on the software COMSOL Multiphysics.This model can be used to analyze the influence of internal pressure-induced tensile stress on the erosion evolution of high pressure pipelines.Combined with the user defined stress-erosion equation,effect of incident angleθ,impacting jet velocity V and surface erosion scar on the damage evolution process of stress-erosion were analyzed.The results indicated that in dilute phase flow,with increase of incident angle,maximum corrosion damage occurs atθ=45°,the maximum erosion rate increases exponentially with the increase of jet velocity,since the flow field and the stress distribution is affected by erosion scar,which should not be neglected for the assessment of stress-erosion damage evolution process.

关 键 词：应力-冲蚀 CFD 数值模拟 多物理场 

分 类 号：TE832[石油与天然气工程—油气储运工程]