液固两相流高速冲蚀条件下的复合热效应研究

项目名称： 液固两相流高速冲蚀条件下的复合热效应研究

项目编号： No.51275156

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 机械、仪表工业

项目作者： 李平

作者单位： 河南理工大学

项目金额： 80万元

中文摘要： 随着我国石油、冶金、化工等液固两相流领域中过流部件服役条件的日益苛刻化，高速冲蚀自生摩擦热使材料的腐蚀与磨损流失速度加快，开展高速冲蚀（冲蚀磨损）热效应及材料损伤机制相关基础理论的研究非常迫切。本项目采用自行研制的带有温度测试系统的冲蚀磨损试验装置对摩擦热进行表征，探讨液固两相流冲蚀磨损条件下自生摩擦热的产生、传递规律及影响因素，研究摩擦热效应对材料冲蚀磨损性能的影响规律；通过试验及计算机模拟相结合的方式，建立冲蚀磨损过程中靶材和料浆液系统温度场模型；重点考察液固两相流条件下冲蚀磨损自生摩擦热效应及其对材料磨损微区的作用机制，揭示冲刷磨损-腐蚀-热效应耦合作用下材料的复合损伤机制；提出控制热效应负面影响的材料设计方法，为关键工程领域中高可靠性长寿命冲蚀磨损设备构件材料的设计和应用提供理论依据和技术支撑。

中文关键词： 热效应；液固两相流；高速冲蚀；损伤机制；表征

英文摘要： Service condition of flowing-passed component is becoming more and more rigorous in liquid-solid two-phase flow fields such as petroleum, metallurgy and chemical industry of China.Especially,self-growing friction heat resulted from high impact velocity should aggravate corrosion and wear loss rate of target material. It is very urgent to carry out the research on friction thermal effect and the related basic theory with material damage mechanism under high impact velocity condition. In the project, the characterization method of friction heat will be carried out by using self-made erosion wear (erosion-corrosion）experiment apparatus with temperature detection system, produce and transfer laws as well as affecting factors of friction heat will be studied under liquid-solid two-phase flow erosion wear condition，the influence law of friction thermal effect on erosion wear property of target material will be researched, the temperature field model of target material and slurry system will be also established by means of combined computer simulation and experiment. Particularly, the project would focus on self-growing friction thermal effect and its mechanism on erosion wear region of the target material. The material damage mechanism coupled with erosion-corrosion-thermal effect will be revealed, and the material de

英文关键词： thermal effect；liquid-solid two-phase flow；high velocity erosion wear；damage mechanism；characaterization