CER - Central Repository
Institute of Chemistry, Technology and Metallurgy
    • English
    • Српски
    • Српски (Serbia)
  • English 
    • English
    • Serbian (Cyrilic)
    • Serbian (Latin)
  • Login
View Item 
  •   Central Repository
  • IHTM
  • Radovi istraživača / Researchers' publications
  • View Item
  •   Central Repository
  • IHTM
  • Radovi istraživača / Researchers' publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

A pseudo-fluid representation of vertical liquid-coarse solids flow

Vertikalno kretanje tečnosti i čvrstih čestica tretirano kao pseudo-fluid

Thumbnail
2005
205.pdf (204.6Kb)
Authors
Garić Grulović, Radmila
Grbavčić, Željko
Arsenijević, Zorana
Article (Published version)
Metadata
Show full item record
Abstract
The pseudo–fluid concept has been applied for the prediction of the pressure gradient and voidage in vertical liquid-coarse solids flow. Treating the flowing mixture as a single homogenous fluid, the correlation for the friction coefficient of the suspension–wall was developed, as was the correlation between the true voidage and the apparent (volumetric) voidage in the transport tube. Experiments were performed using water and spherical glass particles 1.20, 1.94 and 2.98 mm in diameter in a transport tube of 24 mm in diameter. The loading ratio (Gp/Gf) was varied between 0.05 and 1.05 and the fluid superficial velocity was between 0.4 Ut and 4.95 Ut where Ut represents the single particle terminal velocity. The voidage ranged from 0.648 to 0.951 for these ratios. Experimental data for the pressure gradient and voidage from the literature agree well with the proposed correlations.
Za predviđanje gradijenta pritiska i poroznosti pri vertikalnom dvofaznom toku tečnosti i krupnih čvrstih čestica primenjen je koncept pseudofluida. Tretirajući pokretnu smešu tečnosti i čestica kao homogeni fluid, određena je zavisnost za koeficijent trenja suspenzija–zid transportne cevi, kao i zavisnost između stvarne i zapreminske (volumetrijske) poroznosti u transportnoj cevi. Eksperimentalna ispitivanja su izvedena u transportnoj cevi prečnika 24 mm, sa sferičnim staklenim česticama prečnika 1.20, 1.94 i 2.98 mm, pri čemu je kao transportni medijum korišćena voda. Opterećenje toka (Gp/Gf) variralo je između 0.05 i 1.05, dok se površinska brzina fluida kretala od 0.4.Ut do 4.95.Ut, gde je Ut brzina odnošenja usamljene čestice. Za navedene obime opterećenja toka i brzine fluida poroznost u sistemu se kretala od 0.648 do 0.951. Eksperimentalni podaci iz literature za gradijent pritiska i poroznost u dobroj su saglasnosti sa predloženim korelacijama.
Keywords:
liquid–solids flow / pseudo–fluid representation
Source:
Journal of the Serbian Chemical Society, 2005, 70, 5, 775-784
Publisher:
  • Serbian Chemical Society

DOI: 10.2298/JSC0505775G

ISSN: 0352-5139

WoS: 000230375900012

Scopus: 2-s2.0-31644451951
[ Google Scholar ]
3
1
URI
http://cer.ihtm.bg.ac.rs/handle/123456789/207
Collections
  • Radovi istraživača / Researchers' publications
Institution
IHTM

DSpace software copyright © 2002-2015  DuraSpace
About CeR – Central Repository | Send Feedback

OpenAIRERCUB
 

 

All of DSpaceInstitutionsAuthorsTitlesSubjectsThis institutionAuthorsTitlesSubjects

Statistics

View Usage Statistics

DSpace software copyright © 2002-2015  DuraSpace
About CeR – Central Repository | Send Feedback

OpenAIRERCUB