Simulation of transport dynamics in fluidized-bed dryers

Theologos, KM; Maroulis, ZB; Markatos, NC

dc.contributor.author	Theologos, KM	en
dc.contributor.author	Maroulis, ZB	en
dc.contributor.author	Markatos, NC	en
dc.date.accessioned	2014-03-01T01:13:24Z
dc.date.available	2014-03-01T01:13:24Z
dc.date.issued	1997	en
dc.identifier.issn	0737-3937	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12444
dc.subject	Computational fluid dynamics	en
dc.subject	Drying	en
dc.subject	Fluidization	en
dc.subject	Modelling	en
dc.subject	Numerical methods	en
dc.subject	Simulation	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.other	FLOWS	en
dc.subject.other	HEAT	en
dc.subject.other	MASS	en
dc.title	Simulation of transport dynamics in fluidized-bed dryers	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/07373939708917295	en
heal.identifier.secondary	http://dx.doi.org/10.1080/07373939708917295	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	A mathematical model for predicting three-dimensional, two-phase flow, heat and mass transfer inside fluidized-bed dryers has been developed. The model consists of the full set of partial-differential equations that describe the conservation of mass, momentum and energy for both phases inside the dryer, and is coupled with correlations concerning interphase momentum-, heat-, and mass-transfer. It is shown that the model can predict. the most important engineering aspects of a fluidized-bed dryer including pressure drop, particle holdup, temperature distribution in both phases as well as drying efficiency all over the fluidized-bed. Plug-flow conditions are predicted for the gas phase, while back-mixing is predicted for the particles. The effect of particle mass-flow-rate on fluidized-bed dryer performance is evaluated. It is shown that the lower the particle mass flow-fate, the more intense the horizontal moisture gradients, while the higher the particle rate the more uniform the moisture distribution throughout the bed.	en
heal.publisher	MARCEL DEKKER INC	en
heal.journalName	Drying Technology	en
dc.identifier.doi	10.1080/07373939708917295	en
dc.identifier.isi	ISI:A1997XC58100001	en
dc.identifier.volume	15	en
dc.identifier.issue	5	en
dc.identifier.spage	1265	en
dc.identifier.epage	1291	en