- Title
- Effect of inlet boundary conditions on computational fluid dynamics (CFD) simulations of gas-solid flows in risers
- Creator
- Shah, Milinkumar T.; Utikar, Ramjeet P.; Evans, Geoffrey M.; Tade, Moses O.; Pareek, Vishnu K.
- Relation
- ARC.LP0882958, ARC.LP110100717
- Relation
- Industrial & Engineering Chemistry Research Vol. 51, Issue 4, p. 1721-1728
- Publisher Link
- http://dx.doi.org/10.1021/ie200940f
- Publisher
- American Chemical Society (ACS)
- Resource Type
- journal article
- Date
- 2012
- Description
- The effect of type of inlet conditions on the predictions of Eulerian-Eulerian simulations of a circulating fluidized bed riser has been investigated in both 2D and 3D domains. The 2D simulations were conducted using 3 different inlet configurations:(A) solids entering in radial direction from a two-sided inlet and gas entering axially from the bottom inlet, (B) solid entering axially from a two-sided bottom inlet near the wall and gas entering axially from a bottom inlet at the center, and (C) gas phase entering axially from a two-sided bottom inlet near the wall and solids entering axially from a bottom inlet at the center. In 2D simulations, it was found that both time-averaged axial velocity and solids volume fraction radial profiles were functions of the inlet kinetic energy as well as gas-solid mixing patterns at the inlet. Whereas 2D simulations using boundary conditions A and C showed significant deviations from experimental profiles, the boundary condition B as well as full-scale 3D simulations gave reasonable agreements with experimental observations.
- Subject
- circulating fluidized bed; Eulerian; solid inlet; particles
- Identifier
- http://hdl.handle.net/1959.13/1309409
- Identifier
- uon:21865
- Identifier
- ISSN:0888-5885
- Language
- eng
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