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Title:Numerična rešitev konvektivnega toka v porozni snovi zaradi nasprotujočih si vzgonskih sil
Authors:ID Kramer Stajnko, Janja (Author)
ID Jecl, Renata (Author)
ID Škerget, Leopold (Author)
Files:URL http://www.drustvozamehaniko.si/zbornik/ZbornikKD2008.pdf
 
Language:Slovenian
Work type:Unknown
Typology:1.08 - Published Scientific Conference Contribution
Organization:FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
Abstract:V prispevku so predstavljeni numerični rezultati problema naravne konvekcije zaradi dvojne difuzije v porozni snovi, kjer si učinka termične in snovske vzgonske sile med seboj nasprotujeta. Za opis toka tekočine po porozni snovi je uporabljen Brinkmanov model, kjer je upoštevan dodatni viskozni člen v gibalni enačbi. Izkaže se, da je konvektivni tok odvisen od vrste vodilnih parametrov, pri čemer je ključnega pomena vrednost vzgonskega koeficienta, ki definira velikost in smer delovanja posamezne vzgonske sile. Zastavljen sistem parcialnih diferencialnih enačb je rešen z uporabo Robno Območne Integralske Metode, ki se je že izkazala kot primerna za reševanje problemov toka tekočine v porozni snovi.
Keywords:naravna konvekcija, dvojna difuzija, porozna snov, numerični rezultati
Year of publishing:2008
PID:20.500.12556/DKUM-26265 New window
UDC:536.25
COBISS.SI-ID:12630806 New window
NUK URN:URN:SI:UM:DK:HYBY4T7D
Publication date in DKUM:31.05.2012
Views:1956
Downloads:66
Metadata:XML DC-XML DC-RDF
Categories:Misc.
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Secondary language

Language:English
Title:Numerical solution of convective flow in porous media due to opposing buoyancy forces
Abstract:In the present paper the numerical results of double diffusive natural convection in porous media due to opposing buoyancy forces are presented. The fluid flow in porous media is modeled with use of Brinkman model, where the additional viscous term in momentum equation is considered. The convective flow is governed by range of governing parameters, where the buoyancy coefficient is of key importance. The obtained set of partial differential equations is solved with use of Boundary Domain Integral Method. It was already proved, that Boundary Domain Integral Method is suitable for solving transport phenomena in porous media.
Keywords:natural convection, double diffusive, prorous media, numerical results


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