20.500.12556/DKUM-47182 Numerična simulacija turbulentne Rayleigh-Benard naravne konvekcije Numerical simulation of the turbulent Rayleigh-Benard natural convection V magistrski nalogi je opisan pristop k reševanju naravne konvekcije pri visokih Rayleighjevih številih. Z metodo končnih volumnov smo izvedli URANS- in LES-simulacijo. Za URANS-simulacijo je bil uporabljen SST-turbulentni model, za LES-simulacijo pa smo uporabili dinamični Smagorinsky-Lillyjev model. Ker je za izvedbo LES-simulacije potrebna velika računalniška moč, smo tridimenzionalno domeno poenostavili v dvodimenzionalno. Končni rezultati so se med sabo dobro ujemali. Med tridimenzionalno in dvodimenzionalno obravnavo so se pokazale nekatere razlike. The content includes two ways how to solve a natural convection problem at very high Rayleigh numbers. With the fine volume method, we performed a URANS and LES numerical simulation. For the URANS simulation, we have used the SST turbulent model and for the LES simulation, we have used the Dynamic Smagorinsky-Lilly model. To perform the LES simulation the needed computer power was very high. We had to change the three dimensional domain into two dimensions. The results shown a good agreement. There were some differences between the three and two dimensional, domain. Rayleigh-Bénardova naravna konvekcija naravna konvekcija turbulentna naravna konvekcija naravna konvekcija med dvema horizontalnima stenama računalniška dinamika tekočin dinamika turbulentnih pojavov numerična simulacija turbulentne Rayleigh-Bénardove naravne konvekcije metoda končnih volumnov nestacionarna simulacija Rayleigh-Bénard natural convection natural convection turbulent natural convection natural convection between two horizontal walls computational fluid dynamics dynamic of turbulent flows numerical simulation of turbulent Rayleigh- Bénard natural convection fine volume method non-stationary simulation true true false [J. Tibaut] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2015-01-12 09:31:24 2015-08-28 07:07:29 2022-05-20 03:06:56 2021-05-06 03:15:04 2015 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 519.6[536.22:532.517.4](043.2) 18981910 URN:SI:UM:DK:QKVRKXIB MAG_Tibaut_Jan_2015.pdf MAG_Tibaut_Jan_2015.pdf 1 88A9183DC04583AFBCBF84DF05C5B5CB c475071c729ea623158dc12fb5d00da9353af7d7d433ecadf4e481aaec35290f b9c4d79a-7c0b-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=79474 Fakulteta za strojništvo 0 0 0