dc.contributor	Horník Petr, Ing. Ph.D. : 62976
dc.contributor.advisor	Müller Miloš, Ing. Ph.D. : 55450
dc.contributor.author	Elezović, Merim
dc.date.accessioned	2021-08-20T12:08:05Z
dc.date.available	2021-08-20T12:08:05Z
dc.date.committed	2022-4-30
dc.date.defense	2021-06-22
dc.date.issued	2021-06-22
dc.date.submitted	2020-11-1
dc.date.updated	2021-6-22
dc.degree.level	Ing.
dc.description.abstract	The goal of this study is to apply a numerical model for cavitation bubble dynamics that is based on the existing Rayleigh-Plesset equation (RPE). Physical background and derivation of the RPE are given, as well as the basic phenomena associated with cavitation, such as nucleation, shockwaves, and microjets. Several adverse effects of cavitation are discussed, in addition to domains in which cavitation was found to be useful, and the classification of cavitation. Since RPE is a second order ordinary differential equation (ODE), it had to be converted into a system of two first order ODEs before being solved numerically. Runge-Kutta numerical method of fourth order was selected as the most suitable method for solving a system of ODEs, and then applied on the relations in the RPE. For the model application, computational power of Microsoft Excel was determined to be sufficient to handle all the necessary calculations. Furthermore, the impact of changes in different criteria, initial conditions and fluid parameters is studied, such as: bubble initial radius, pressure amplitude, surface tension, and liquid viscosity. Model is then verified based on existing numerical results. Model is then validated towards two types of experiments - laser-induced cavitation bubble, and spark-generated bubble. Finally, applicability of the model for cavitation erosion prediction is briefly discussed.	cs
dc.description.abstract	The goal of this study is to apply a numerical model for cavitation bubble dynamics that is based on the existing Rayleigh-Plesset equation (RPE). Physical background and derivation of the RPE are given, as well as the basic phenomena associated with cavitation, such as nucleation, shockwaves, and microjets. Several adverse effects of cavitation are discussed, in addition to domains in which cavitation was found to be useful, and the classification of cavitation. Since RPE is a second order ordinary differential equation (ODE), it had to be converted into a system of two first order ODEs before being solved numerically. Runge-Kutta numerical method of fourth order was selected as the most suitable method for solving a system of ODEs, and then applied on the relations in the RPE. For the model application, computational power of Microsoft Excel was determined to be sufficient to handle all the necessary calculations. Furthermore, the impact of changes in different criteria, initial conditions and fluid parameters is studied, such as: bubble initial radius, pressure amplitude, surface tension, and liquid viscosity. Model is then verified based on existing numerical results. Model is then validated towards two types of experiments - laser-induced cavitation bubble, and spark-generated bubble. Finally, applicability of the model for cavitation erosion prediction is briefly discussed.	en
dc.description.mark
dc.format	59 p. (56 769 characters)
dc.format.extent	Ilustrace, Grafy, Tabulky -
dc.identifier.signature	V 202103217
dc.identifier.uri	https://dspace.tul.cz/handle/15240/160750
dc.language.iso	an
dc.relation.isbasedon	parFRANC, Jean-Pierre a Jean-Marie MICHEL. Fundamentals of cavitation. Dordrecht: Kluwer Academic Publishers, [2004]. Fluid mechanics and its applications, volume 76. ISBN 1-4020-2232-8.par parBRENNEN, Christopher E. Cavitation and bubble dynamics. New York: Cambridge University Press, 2014. ISBN 9781107644762.par
dc.rights	Vysokoškolská závěrečná práce je autorské dílo chráněné dle zákona č. 121/2000 Sb., autorský zákon, ve znění pozdějších předpisů. Je možné pořizovat z něj na své náklady a pro svoji osobní potřebu výpisy, opisy a rozmnoženiny. Jeho využití musí být v souladu s autorským zákonem https://www.mkcr.cz/assets/autorske-pravo/01-3982006.pdf a citační etikou https://knihovna.tul.cz/document/26	cs
dc.rights	A university thesis is a work protected by the Copyright Act. Extracts, copies and transcripts of the thesis are allowed for personal use only and at one?s own expense. The use of thesis should be in compliance with the Copyright Act. https://www.mkcr.cz/assets/autorske-pravo/01-3982006.pdf and the citation ethics https://knihovna.tul.cz/document/26	en
dc.rights.uri	https://knihovna.tul.cz/document/26
dc.rights.uri	https://www.mkcr.cz/assets/autorske-pravo/01-3982006.pdf
dc.subject	cavitation	cs
dc.subject	bubble dynamics	cs
dc.subject	Rayleigh-Plesset equation	cs
dc.subject	laser-induced bubble	cs
dc.subject	spark-generated bubble	cs
dc.subject	cavitation	en
dc.subject	bubble dynamics	en
dc.subject	Rayleigh-Plesset equation	en
dc.subject	laser-induced bubble	en
dc.subject	spark-generated bubble	en
dc.title	Modelling of the cavitation bubbles dynamics	cs
dc.title	Modelling of the cavitation bubbles dynamics	en
dc.type	diplomová práce	cs
local.degree.abbreviation	Navazující
local.degree.discipline	KSA
local.degree.programme	Mechanical Engineering
local.degree.programmeabbreviation	N2301
local.department.abbreviation	KEZ
local.faculty	Fakulta strojní	cs
local.faculty.abbreviation	FS
local.identifier.author	S19000342
local.identifier.stag	41788
local.identifier.verbis
local.identifier.verbis	1c76b508-5996-42ea-a535-2fcd4b2a5341
local.note.administrators	automat
local.note.secrecy	Povoleno ZverejnitPraci Povoleno ZverejnitPosudky
local.poradovecislo	3217

Modelling of the cavitation bubbles dynamics

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