Magnetic resonance studies of a gas-solids fluidised bed:Jet-jet and jet-wall interactions

作     者：Meenal Pore Daniel J.Holland Thusara C.Chandrasekera Christoph R.Müller Andrew J.Sederman John S.Dennis Lynn F.Gladden John F.Davidson 

作者机构：Department of Chemical Engineering and BiotechnologyUniversity of CambridgePembroke StreetCambridgeCB2 3RAUK Department of Mechanical and Process EngineeringETH ZurichSonneggstrasse 38092 ZurichSwitzerland 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2010年第8卷第6期

页      面：617-622页

核心收录：

学科分类：081704[工学-应用化学] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 081701[工学-化学工程] 0703[理学-化学] 0702[理学-物理学] 

基　　金：the Engineering and Physical Sciences Research Council(Grant number EP/F041772/1) 

主　　题：Fluidised bed MRI Jets Distributor design 

摘      要：Magnetic resonance imaging （MRI） gave images of air jets from orifices in the distributor plate of a bed of poppy seeds. Attention focused on two features： （1） The interaction between nearby vertical jets from two, three or four orifices; （2） Wall effects, where one or more orifices created vertical jets near the vertical wall of the cylinder containing the particle bed. The results show that nearby jets are mutually attracted. Likewise a jet near a wall bends out of the vertical, towards the wall, For multiple adjacent jets, the jet lengths show dependence on orifice layout： the lengths are in reasonable agreement with published measurements, by other methods, for single jets. The MRI gives three-dimensional images of the single jets and of multiple jets, separate or merging.