| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font

Show document Help

Title:Analitični in numerični preračun vodnega hladilnika GPE 2014 in njuna primerjava
Authors:ID Kostrevc, Jakob (Author)
ID Marn, Jure (Mentor) More about this mentor... New window
ID Iljaž, Jurij (Comentor)
Files:.pdf UNI_Kostrevc_Jakob_2014.pdf (3,10 MB)
MD5: C2373A67342822FE8E8101FBB1C3DD89
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FS - Faculty of Mechanical Engineering
Abstract:Formula Student je je mednarodno študentsko inženirsko tekmovanje pri vsako leto skupine študentov izdelajo dirkalnike in se z njimi na številnih tekmovanjih med seboj pomerijo. Eden izmed številnih izzivov tekmovanja je zasnovati primeren hladilni sistem za odvajanje odvečne toplote, ki jo motor disipira med delovanjem. Ključen del izziva je, da analiziramo in določimo primernost samega prenosnika toplote oz. hladilnika za potreben odvod toplotnega toka. Tega se lotimo z pomočjo analitičnega preračuna, kjer bomo z uporabo efektivnostne-NTU metode določili potencialno temperaturno razliko in odvedeno toploto ob določeni geometriji, robnih pogojih in snovskih lastnostih. V nadaljevanju se lotimo analize z pomočjo računalniške dinamike tekočin (CFD), kjer določimo enake robne, snovske in geometrijske omejitve, kot pri analitičnem pristopu. Nato analiziramo hitrostno polje in tokovnice, tako kot temperaturno polje in polje toplotnega toka. Za zaključek primerjamo pristopa in opazimo, da se pridobljeni rezultati razlikujejo le za približno 5 % ampak glede na prednosti in slabosti posameznih metod dobimo najboljše rezultate z kombinacijo obeh metod.
Keywords:Prenos toplote prenosniki toplote, numerična simulacija, analitičen preračun, empirične formule, Nusseltovo število, izkoristek reber, Efektivnosta-NTU metoda, CFD
Place of publishing:Maribor
Publisher:[J. Kostrevc]
Year of publishing:2014
PID:20.500.12556/DKUM-46068 New window
UDC:[519.6:536.24]:621.45.038(043.2)
COBISS.SI-ID:18473750 New window
NUK URN:URN:SI:UM:DK:O6NTXSFU
Publication date in DKUM:11.12.2014
Views:2249
Downloads:273
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FS
:
Copy citation
  
Average score:(0 votes)
Your score:Voting is allowed only for logged in users.
Share:Bookmark and Share



Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

Secondary language

Language:English
Title:Analytical and numerical modelling of water cooler of GPE 2014 and their comparison
Abstract:Formula Student is an international engineering competition, where every year teams of student design and manufacture a formula styled vehicle and compete in numerous events. One of the challenges in designing a race car is to develop a suitable cooling system, which sufficiently removes the dissipated heat from the engine. Our key goal is to analyse and determine the suitability of the heat exchanger, for the required removal of heat. First we analyse our exchanger by creating an analytical model with help of the Effectiveness-NTU method and determine the temperature difference of the fluid as well as the heat flux trough the heat exchanger core. Next we do the analysis using computational fluid dynamics (CFD) under the same circumstances as in the analytical approach. From the analysis we get the velocity field, streamlines, temperature field and heat flux. At the end we compare both methods and se that the difference in results is about 5% and to get the best results a combination of both methods is recommended.
Keywords:Heat transfer, Heat exchanger, numerical simulation, analytical modeling, empirical correlations, Nusselt number, fin efficiency, NTU method, CFD


Comments

Leave comment

You must log in to leave a comment.

Comments (0)
0 - 0 / 0
 
There are no comments!

Back
Logos of partners University of Maribor University of Ljubljana University of Primorska University of Nova Gorica