Horizontal gas-solid pneumatic transport: the effect of hydordynamics using computational fluid dynamics
Alexandre M. S. Costa1; Flávio Clareth Colman1; Marcelo José Alba2; Paulo Roberto Paraíso1; Luíz Mário de Matos Jorge1
1 State University of Maringá; 2 Federal Technological University of Paraná
doi:10.20906/CPS/COB-2015-1636
Resumo
In this work we investigate numerically the pneumatic transport in a horizontal tube. Our modelling is implemented using the open-source code MFIX. For the code, the gas and solid phases are treated as inter-penetrating continua in an Eulerian framework. Then, the locally-averaged (continuum) mass, momentum and energy balance, are solved using a modified version of the SIMPLE method. Here, we explore the effect of different parameters from hydrodynamics on the pneumatic transport results: drag relationship between the two phases, method of solution for the solids granular energy, solids stress models, gas-phase turbulence, collisional and frictional coefficients. Towards validation of our modelling, the results are compared with a set of pneumatic transport experimental correlation data from the literature. The degree of accordance points to the better hydrodynamic model to be used.
Palavras-chave: pneumatic transport; computational fluid dynamics; MFIX