Effect of Placements (horizontal with vertical) on Gas-solid Flow and Particle Impact Erosion in Gate Valve  

作　　者：LIN Zhe ZHU Linhang CUI Baoling LI Yi RUAN Xiaodong 

机构地区：[1]The Zhejiang Provincial Key Laboratory of Fluid Transmission Technology,Zhejiang Sci-Tech University [2]1201 Chu Kochen Honor College,Zhejiang University [3]State Key Laboratory of Fluid Power Transmission and Control,Zhejiang University

出　　处：《Journal of Thermal Science》2014年第6期558-563,共6页热科学学报（英文版）

基　　金：supported by National Natural Science Foundation of China(Grant No.21276241)etc

摘　　要：Gate valve has various placements in the practical usages.Due to the effect of gravity,particle trajectories and erosions are distinct between placements.Thus in this study,gas-solid flow properties and erosion in gate valve for horizontal placement and vertical placement are discussed and compared by using Euler-Lagrange simulation method.The structure of a gate valve and a simplified structure are investigated.The simulation procedure is validated in our published paper by comparing with the experiment data of a pipe and an elbow.The results show that for all investigated open degrees and Stokes numbers(St),there are little difference of gas flow properties and flow coefficients between two placements.It is also found that the trajectories of particles for two placements are mostly identical when St << 1,making the erosion independent of placement.With the increase of St,the distinction of trajectories between placements becomes more obvious,leading to an increasing difference of the erosion distributions.Besides,the total erosion ratio of surface T for horizontal placement is two orders of magnitudes larger than that for vertical placement when the particle diameter is 250 μm.

关 键 词：gate valve PLACEMENT flow properties EROSION 

分 类 号：O359[理学—流体力学]