气固两相流弯管冲蚀磨损研究进展

Research Progress of Erosion Wear of Bent Pipes under Gas-Solid Two-Phase Flow Conditions

冲蚀磨损是固体表面与具有一定速度的含有固相微粒的流体相互作用所产生的一种材料磨损现象。冲蚀磨损广泛存在于工业生产中,是造成很多机械设备失效和破坏的一个重要原因。尤其是气固两相流条件下弯管遭受着严重的冲蚀磨损问题,使用寿命大大缩短,甚至造成重大的安全生产事故。为了给多相流条件下设备的冲蚀磨损研究及抗冲蚀磨损提供参考,综述了近年来气固两相流条件下弯管冲蚀磨损的研究现状及进展;其次,阐述了目前研究气固两相流弯管冲蚀磨损的主要方法,重点总结了常用的试验研究装置和数值模拟方法的优缺点;最后,对未来气固两相流条件下弯管冲蚀磨损研究进行了展望。

Erosion wear is a kind of material wear phenomenon caused by the interaction between solid surface and fluid containing solid particles with a certain velocity,which exists widely in industrial production and is an important reason for failure and damage to many mechanical devices.Especially under gas-solid two-phase flow conditions,bent pipes suffer from severe erosion wear,greatly reducing their service life and even causing major safety accidents.In order to provide reference for the study of erosion wear and anti-erosion wear of equipment under multiphase flow conditions,this article reviewed the current research status and progress on erosion wear of bent pipes under gas-solid two-phase flow conditions in recent years.Moreover,the main methods currently used to study the erosion wear of gas-solid two-phase flow bends were described,the advantages and disadvantages of commonly used experimental research equipment and numerical simulation methods were summarized emphatically.At last,the prospects for future research on erosion wear of bent pipes under gas-solid two-phase flow conditions were presented.