Modelling the wall collision of regular non-spherical particles and experimental validation

The importance of numerical calculations (CFD) for supporting the optimization and lay-out of industrial processes involving multiphase flows is continuously increasing. Numerous processes in powder technology involve wall-bounded gas-solid flows where wall collisions essentially affect the process...

Full description

Autores:
Quintero Arboleda, Brian
Qadir, Zeeshan
Sommerfeld, Martin
Laín Beatove, Santiago
Tipo de recurso:
Article of journal
Fecha de publicación:
2014
Institución:
Universidad Autónoma de Occidente
Repositorio:
RED: Repositorio Educativo Digital UAO
Idioma:
eng
OAI Identifier:
oai:red.uao.edu.co:10614/14265
Acceso en línea:
https://hdl.handle.net/10614/14265
Palabra clave:
Colisiones (Física)
Dinámica de fluidos
Fibras
Fibers
Fluid dynamics
Collisions (Physics)
Rights
openAccess
License
Derechos Reservados The Amarican Society of Mechanical Engineers (ASME), 2014
Description
Summary:The importance of numerical calculations (CFD) for supporting the optimization and lay-out of industrial processes involving multiphase flows is continuously increasing. Numerous processes in powder technology involve wall-bounded gas-solid flows where wall collisions essentially affect the process performance. In modelling the particle wall-collision process in the frame of numerical computations the general assumption is that the particles are spherical. However, in most practical situations one is dealing with irregular non-spherical particles or particles with a certain shape, such as granulates or fibers. In the case of non-spherical particle-wall collisions in confined flows, additional parameters such as roughness, particle shape and orientation play an important role and may strongly affect the transport behavior. The change of linear and angular velocity of the particle depends on these parameters, specifically the orientation and the radius of impact of the particles