Premium
Numerical simulation of dilute turbulent gas‐particle flow with turbulence modulation
Author(s) -
Rao Akhil,
Curtis Jennifer S.,
Hancock Bruno C.,
Wassgren Carl
Publication year - 2012
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.12673
Subject(s) - turbulence , mechanics , drag , k epsilon turbulence model , closure (psychology) , turbulence kinetic energy , flow (mathematics) , k omega turbulence model , particle (ecology) , turbulence modeling , physics , coupling (piping) , statistical physics , classical mechanics , materials science , engineering , mechanical engineering , geology , oceanography , economics , market economy
Abstract A numerical study of a dilute turbulent gas‐particle flow with inelastic collisions and turbulence modulation in an Eulerian framework is described. A new interpretation is provided for the interaction/coupling terms, based on a fluctuating energy transfer mechanism. This interpretation provides for a new robust closure model for the interaction terms with the ability to predict the turbulence dampening as well as the turbulence enhancement phenomenon. Further, the model developed herein is investigated along with a variety of other published closure models used for the interaction/coupling terms, particle drag, and solid stress. The models are evaluated against several sets of benchmark experiments for fully‐developed, turbulent gas‐solid flow in a vertical pipe. © 2011 American Institute of Chemical Engineers AIChE J, 2012