diplomsko delo
Dejan Ploj (Author), Leopold Škerget (Mentor), Jure Ravnik (Co-mentor)

Abstract

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.

Keywords

laminarni notranji tok;mejna plast;toplotni prenosnik;računalniška dinamika tekočin;mehanika tekočin;prenos toplote;

Data

Language: Slovenian
Year of publishing:
Source: Maribor
Typology: 2.11 - Undergraduate Thesis
Organization: UM FS - Faculty of Mechanical Engineering
Publisher: [D. Ploj]
UDC: 532.5(043.2)
COBISS: 16189718 Link will open in a new window
Views: 2285
Downloads: 120
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Other data

Secondary language: English
Secondary title: Influence of channel geometry on the enhancement of heat transfer
Secondary abstract: 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.
Secondary keywords: laminar internal flow;boundary layer;heat exchanger;computational fluid dynamics;Ansys;
URN: URN:SI:UM:
Type (COBISS): Undergraduate thesis
Thesis comment: Univ. v Mariboru, Fak. za strojništvo
Pages: X, 62 f.
Keywords (UDC): mathematics;natural sciences;naravoslovne vede;matematika;physics;fizika;fluid mechanics in general;mechanics of liquids (hydromechanics);mehanika tekočin;mehanika kapljevin;liquid motion;hydrodynamics;
ID: 991756