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.本笔记探讨了极浅流化床中可能出现的一种异常流态化模式。配套提供的材料可用于借助MFiX代码（版本：Release 2016-1）复现该行为。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，该代码会读取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，可通过将文本文件getpgy.in作为输入，从post工具中提取压力剖面数据。需注意：若在mfix.dat中修改了如本笔记中所述的分辨率参数，也需同步对getpgy.in文件做出相应调整。