Artificial levitation of a very shallow fluidized bed in CFD-DEM

The note discusses an odd fluidization pattern that may be observed in very shallow fluidized beds. The associated material are provided to reproduce this behavior with the MFiX code, version: Release 2016-1. After downloading and building the mfix and post executables, build and execute the source_particle_generator.f90 code which reads the Pgen.in file and creates a particle_input.dat file. Next run the mfix code with the mfix.dat and particle_input.dat files. After the simulation is complete, pressure profiles may be extracted from post by piping in the text file getpgy.in. Note that if the resolution is changed in mfix.dat to different values as discussed in the note, associated changes should also be made to the getpgy.in file.本笔记探讨了可在极浅流化床中观测到的异常流化模式。配套材料已提供，可借助版本为Release 2016-1的MFiX代码复现该现象。下载并编译mfix与post可执行文件后，编译并运行source_particle_generator.f90代码：该代码将读取Pgen.in文件并生成particle_input.dat文件。随后使用mfix.dat与particle_input.dat文件运行MFiX代码。模拟完成后，可通过导入文本文件getpgy.in，从post工具中提取压力剖面数据。请注意：若按照本笔记所述修改mfix.dat中的分辨率参数，则需同步对getpgy.in文件作出相应调整。