颗粒参数对倾斜串联弯管冲蚀磨损的影响  

Influence of Particle Parameters on Erosion Wear of Inclined Tandem Bend

作　　者：谢晓刚 石喜[1] 谭春彬 田云霞 XIE Xiao-gang;SHI Xi;TAN Chun-bin;TIAN Yun-xia(School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学土木工程学院,兰州730070

出　　处：《科学技术与工程》2024年第19期8259-8268,共10页Science Technology and Engineering

基　　金：国家自然科学基金(51969011);甘肃省自然科学基金(20JR10RA239);甘肃省高等学校产业支撑计划(2022CYZC-32)。

摘　　要：为研究颗粒参数对倾斜串联弯管冲蚀磨损的影响,以倾斜度为60°的S形串联弯管为研究对象,通过离散相模型(DPM)分析颗粒流速、颗粒直径、颗粒质量流率等颗粒参数对串联弯管冲蚀速率、主要冲蚀区域和冲蚀形貌的影响规律,并对比两弯管的冲蚀磨损。结果表明:颗粒流速对弯管的冲蚀磨损影响最大,呈指数关系;颗粒直径对于弯管2的影响大于弯管1,弯管2的磨损随直径的增加呈先增后减的趋势,当颗粒直径增加到250μm以后,弯管1的冲蚀磨损大于弯管2;颗粒质量流速对弯管的冲蚀磨损影响较小,随着颗粒质量流速的增加,两弯管冲蚀速率的增速逐渐缓慢。可见为增加弯管使用寿命,减少弯管的冲蚀磨损,使用时应注意控制流体流速。In order to study the influence of particle parameters on the erosion wear of inclined tandem elbows,the influence of particle flow rate,main erosion area and erosion morphology of the two bends was analyzed by discrete phase model(DPM)by taking the S-type tandem bend with an inclination of 60°as the research object,and the erosion wear of the two bends was compared.The results show that the particle velocity has the greatest influence on the erosion wear of the elbow,which shows an exponential relationship.The influence of particle diameter on elbow 2 is greater than that of elbow 1.The wear of Elbow 2 increases first and then decreases with the increase of particle diameter.When the particle diameter increases to 250μm,the erosion wear of Elbow 1 is greater than that of elbow 2.Particle mass velocity has little influence on the erosion wear of the pipe.With the increase of particle mass velocity,the erosion rate increases slowly.It can be seen that in order to increase the service life of the bend and reduce the erosion and wear of the elbow,attention should be paid to controlling the fluid flow rate when using.

关 键 词：倾斜度 串联弯管 DPM 颗粒参数 冲蚀磨损 

分 类 号：TV672.2[水利工程—水利水电工程]