中文摘要：

门阀门在实际用法有各种各样的放置。由于严肃的效果，粒子轨道和侵蚀在放置之间是不同的。因此，在这，在为水平放置和垂直放置的门阀门的学习，煤气固体的流动性质和侵蚀被使用 Euler-Lagrange 模拟方法讨论并且比较。一个门阀门的结构和简化结构被调查。模拟过程被与一根管子和肘的实验数据作比较在我们的出版的纸验证。结果为所有调查的开的度显示出那并且司烧数字(圣) ，有在二放置之间的煤气的流动性质和流动系数的小差别。为二放置的粒子的轨道主要是相同的，这也被发现什么时候圣吗？1，放置使侵蚀独立。随圣的增加，在放置之间的轨道的区别变得更明显，导致侵蚀分布的增加的差别。而且，当粒子直径是 250m 时，为水平放置的表面 T 的全部的侵蚀比率为垂直放置比那大二个数量级。

英文摘要：

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.