20.500.12556/DKUM-21860 VPLIV GEOMETRIJE KANALOV NA IZBOLJŠANJE PRENOSA TOPLOTE INFLUENCE OF CHANNEL GEOMETRY ON THE ENHANCEMENT OF HEAT TRANSFER V diplomskem delu je obravnavan laminarni tok hladilne tekočine skozi kanale toplotnega prenosnika. S pomočjo računalniške dinamike tekočin sta izvedeni analiza in medsebojna primerjava tokovnih in toplotnih razmer različnih geometrij kanalov. Izvedena je tudi optimizacija, tako da je z obliko doseženo mešanje tekočine oziroma tanjšanje mejne plasti in s tem izboljšanje prenosa toplote. Problem je najprej obravnavan časovno neodvisno v dveh dimenzijah, nato časovno odvisno in na koncu še prostorsko. Na podlagi rezultatov numeričnih simulacij je bilo podanih nekaj predlogov za izdelavo in laboratorijsko preskušanje določenih izvedb toplotnih prenosnikov. Podane so tudi smernice za nadaljnje numerične analize. In this diploma work laminar flow of coolant through ducts of a heat exchanger is treated. Analysis and comparison of flow and heat conditions between different duct geometries are made using computational fluid dynamics. For the improvement of heat transfer an optimisation of duct geometries is given so that fluid mixing or thinning of boundary layer is achieved. At first the problem is considered as time independent two-dimensional, then as time dependent and at last as three-dimensional. Based on the results of numerical simulations a few suggestions for the development and testing of certain designs of heat exchangers have been provided. Guidelines for further numerical analysis are given. laminarni notranji tok mejna plast toplotni prenosnik računalniška dinamika tekočin Ansys laminar internal flow boundary layer heat exchanger computational fluid dynamics Ansys true true false [D. Ploj] Slovenski jezik Angleški jezik Diplomsko delo 2012-01-11 22:08:26 2012-02-27 09:54:06 2022-04-14 10:57:33 2023-12-28 03:32:41 2012 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 532.5(043.2) 16189718 URN:SI:UM:DK:ZFA0CZUW UNI_Ploj_Dejan_2012.pdf UNI_Ploj_Dejan_2012.pdf 1 C505188D4EF9E124D39BC72C7F7E2387 a8d5d21e1184f0e9af8e36534f3333225723a867728f958cf2357d8e95fc1752 f59ddc23-7c05-11eb-bb7a-00155d0001ca 20.500.12556/dkum/ec3202dd-f226-4ce0-9005-2d803bea0296 https://dk.um.si/Dokument.php?lang=slv&id=28118 Fakulteta za strojništvo 0 0 0