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Title:Sklopljen model prenosa toplote in snovi med delcem in tokom tekočine pri razpršilen sušenju na osnovi Metode robnih elementov
Authors:ID Gomboc, Timi (Author)
ID Iljaž, Jurij (Author)
ID Zadravec, Matej (Author)
ID Hriberšek, Matjaž (Author)
Files:.pdf Sklopljen_model_prenosa-Gomboc-2022.pdf (17,12 MB)
MD5: 8D7A0544E1B4BCA2EA60D373CD81EC3B
 
URL https://journals.um.si/index.php/anali-pazu/article/view/1897
 
Language:Slovenian
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:UZUM - University of Maribor Press
FS - Faculty of Mechanical Engineering
Abstract:Sušenje vlažne snovi je ena izmed najstarejših procesnih tehnik, ki se uporablja na številnih industrijskih področjih. Sušenje je zapleten fizikalni proces, ki obsega vezan večfazni prenos toplote, snovi in gibalne količine. Pri sušenju delcev, kot je na primer razpršilno sušenje, je čas sušenja odvisen od lokalnih pogojev v sušilnem plinu, in sicer na poti vsakega posameznega delca skozi sušilnik. Iz tega razloga je zelo pomembno poznavanje temperaturnega polja kot tudi polja vlažnosti v sušilniku, ki se zaradi toplotne in masne izmenjave med delci in sušilnim plinom nenehno spreminja. V prispevku je obravnavan numerični model za izračun sušenja poroznih delcev v toku sušilnega plina, pri čemer je reševanje problema izvedeno v sklopu Euler-Lagrange modela računske dinamike tekočin, in sicer z metodo robnih elementov. Povezava med delci in tokom tekočine je izvedena z nadgradnjo modela točkovnega izvora, ki upošteva konvektivni prenos toplote in snovi v sušilnem plinu. Testni izračuni potrjujejo primernost in pomembnost razvitega numeričnega modela za prostorski in časovni izračun sušenja delcev v toku sušilnega plina.
Keywords:krogelni delci, porozni medij, metoda robnih elementov, eliptična osnovna rešitev, razpršilno sušenje, 1D model
Publication status:Published
Publication version:Version of Record
Submitted for review:05.01.2022
Publication date:30.04.2022
Place of publishing:Maribor
Publisher:Univerza v Mariboru, Univerzitetna založba
Year of publishing:2022
Number of pages:36
Numbering:Letn.12, št.1
PID:20.500.12556/DKUM-97269 New window
UDC:536:538.9
ISSN on article:2820-364X
COBISS.SI-ID:106546947 New window
DOI:10.18690/analipazu.12.1.31-66.2022 New window
Publication date in DKUM:26.02.2026
Views:152
Downloads:6
Metadata:XML DC-XML DC-RDF
Categories:Misc.
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Record is a part of a journal

Title:Anali PAZU
Publisher:Združenje Pomurska akademsko znanstvena unija, Združenje Pomurska akademsko znanstvena unija, Univerzitetna založba Univerze v Mariboru
ISSN:2232-416X
COBISS.SI-ID:257553152 New window

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

Language:English
Title:The Model of Conjugate Heat and Mass Transfer Between a Particle and a Fluid Flow in Spray Drying Based on the Boundary Element Method
Abstract:Drying is one of the oldest process technologies, which is used in different industrial applications. Drying process is complex physical process that involves coupled multiphase heat, mass and momentum transfer. As for example by spray drying process, local drying conditions inside the dryer affect to total drying time of porous particles. For this reason, the influence between particle and drying gas is very important. Through the drying process heat and mass exchange between particles and drying gas occurs, which results in local change of drying conditions. Two-way interaction (drying air to particle and particle to drying air) need to be considered to obtain accurate results. Fully coupled model for heat and mass transfer between particles and drying gas on the base of the Boundary Elements Method was developed in the present work, were particles were modelled as points. The results presented in this work show that two-way coupling between particles and drying gas is important in order to provide accurate results.
Keywords:spherical particle, porous media, boundary element method, elliptic fundamental solution, spray drying, 1D approach


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  1. Anali PAZU

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