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Title:
Numerična analiza kavitacije v toku okoli valjaste ovire
Authors:
ID
Skerbiš, Primož
(Author)
ID
Biluš, Ignacijo
(Mentor)
More about this mentor...
ID
Širok, Brane
(Comentor)
Files:
UNI_Skerbis_Primoz_2014.pdf
(2,46 MB)
MD5: 990E81F81659675C1C7B6C782E99DD75
Language:
Slovenian
Work type:
Bachelor thesis/paper
Typology:
2.11 - Undergraduate Thesis
Organization:
FS - Faculty of Mechanical Engineering
Abstract:
V diplomskem delu so predstavljeni rezultati numerične simulacije in podana njihova primerjava za tri različne kavitacijske obratovalne režime. Podatki za primerjavo numeričnih rezultatov izhajajo iz predhodno opravljenega eksperimenta na laboratorijski merilni progi. Primerjava temelji na vizualni primerjavi kavitacijskih oblakov, tlačnih polj in nihanja tlaka za oviro. Podrobneje smo si ogledali tudi hitrostno polje v brazdi, kjer smo zaznali nastanek Karmanove vrtinčne strukture. Za simulacijo tokovnih razmer in kavitacije je bil uporabljen programski paket Ansys CFX 14. Ugotovitve kažejo zadovoljivo ujemanje numeričnih in eksperimentalnih rezultatov. Za natančnejšo kvantitativno primerjavo bi bilo začeto delo smiselno nadaljevati v smeri izboljšanja prenosne enačbe homogenega modela ali pa z uporabo zahtevnejših npr. dvo-enačbnih modelov.
Keywords:
kavitacija
,
numerična simulacija
,
homogen dvofazni model
Place of publishing:
Maribor
Publisher:
[P. Skerbiš]
Year of publishing:
2014
PID:
20.500.12556/DKUM-45261
UDC:
[519.6+004.94]:532.528(043.2)
COBISS.SI-ID:
18409494
NUK URN:
URN:SI:UM:DK:P31WRQND
Publication date in DKUM:
20.10.2014
Views:
1582
Downloads:
160
Metadata:
Categories:
KTFMB - FS
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:
SKERBIŠ, Primož, 2014,
Numerična analiza kavitacije v toku okoli valjaste ovire
[online]. Bachelor’s thesis. Maribor : P. Skerbiš. [Accessed 23 January 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=45261
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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:
Numerical analysis of cavitation on bluff body
Abstract:
This thesis presents the results of numerical simulation and the comparison for three different operating regimes of cavitation. Input data for simulation of cavitation had already existed and were derived from a previously performed experiment on cavitation station. The comparison is based on a visual comparison of cavitation clouds, pressure fields and pressure fluctuations behind the bluff body. We closely examined the velocity field in the groove, where we detected the formation of Karmana vortex street. Software package Ansys CFX 14 was used for simulation of flow conditions and cavitation. The findings show satisfactory match between numerical and experimental results. For a more detailed quantitative comparison it would make sense to continue the work in the direction of improving the transmission equation of homogeny model or by using more complex two equation models.
Keywords:
cavitation
,
numerical simulation
,
homogeneus two-phase model
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