Studies on the Horizontal Jet in a Two-Dimensional Bed

• Main Authors: Chen- You-Hua, 陳尤華
• Other Authors: Chyang Chien-Song
• Format: Others
• Language: zh-TW
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/58473683580900211759

碩士 === 中原大學 === 化學工程研究所 === 86 === The studies of horizontal penetration jets were carried out in a two-dimensional bed with a cross section of 15 mm * 400 mm.No background fluidized gas was discharged into the bed. The bedmaterials were glass beads with various diameters of 0.069,0.081, 0.137, 0.230, 0.545, 0.650 and 0.920 mm. The effects of particle sizes, nozzle diameters and velocities on horizontal penetration jets were investigated. Three gas discharge modes, voids, transition regions and jets were observed. The void cam be formed at lower gas velocities or higher static bed heihgts. When the gas velocityincreased gradually, jets would form from voids. For horizontal jet penetration lengths from multi-nozzles,the back jet penetration length was longer than the front jetpenetration length. The effect of the back jet penetrationlength on the front jet penetration length was insignificant.