dc.contributor	Horník Petr, Ing. Ph.D. : 67086
dc.contributor.advisor	Müller Miloš, Ing. Ph.D. : 55450
dc.contributor.author	Salonga, Runer Shiloh
dc.date.accessioned	2019-10-14T10:22:20Z
dc.date.available	2019-10-14T10:22:20Z
dc.date.committed	2020-4-30
dc.date.defense	2019-05-29
dc.date.issued	2019-05-29
dc.date.submitted	2018-11-1
dc.date.updated	2019-5-29
dc.degree.level	Ing.
dc.description.abstract	Cavitation is a phenomenon that is commonly observed in turbines, water pumps, and other similar mechanisms which involve the high-speed and high-pressure movement of fluids, as it is the change in state of a material due to a fast pressure change, in particular from the liquid to the solid state. As a result, bubbles of water vapor form within the fluid, which interact with solid surfaces in a short span of time, particularly the creation of jets during the collapse of these bubbles. These jets inflict force on these solid walls, andthis interaction between bubble and solid wall may cause positive or negative effects, which may be harnessed when better understood.This project aims to develop an analysis tool, developed in C++, that will aid in the understanding of the dynamics of the cavitation bubble in the context of a dynamic flow system with water as the medium. Investigations are made with the tool on an experimental setup consisting of a spark generator for creating the cavitation bubbles, monitored by a high-speed camera and measured by a polyvinylidene fluoride (PVDF) piezoelectric sensor. The camera is used to observe the development of the bubble and determine its size through image processing of the resulting images that are taken, while the PVDF sensor is a low cost option for measuring pressure on a flat surface, as it can convert pressure into voltage.In this study, the differences between the single- and double-bubble spark generated setups are observed and analyzed through the optical and acoustical measurement methods. From these comparisons, the project aims to set a baseline for continued study of further specialized measurement and analysis tools of cavitation behavior.	cs
dc.description.abstract	Cavitation is a phenomenon that is commonly observed in turbines, water pumps, and other similar mechanisms which involve the high-speed and high-pressure movement of fluids, as it is the change in state of a material due to a fast pressure change, in particular from the liquid to the solid state. As a result, bubbles of water vapor form within the fluid, which interact with solid surfaces in a short span of time, particularly the creation of jets during the collapse of these bubbles. These jets inflict force on these solid walls, andthis interaction between bubble and solid wall may cause positive or negative effects, which may be harnessed when better understood.This project aims to develop an analysis tool, developed in C++, that will aid in the understanding of the dynamics of the cavitation bubble in the context of a dynamic flow system with water as the medium. Investigations are made with the tool on an experimental setup consisting of a spark generator for creating the cavitation bubbles, monitored by a high-speed camera and measured by a polyvinylidene fluoride (PVDF) piezoelectric sensor. The camera is used to observe the development of the bubble and determine its size through image processing of the resulting images that are taken, while the PVDF sensor is a low cost option for measuring pressure on a flat surface, as it can convert pressure into voltage.In this study, the differences between the single- and double-bubble spark generated setups are observed and analyzed through the optical and acoustical measurement methods. From these comparisons, the project aims to set a baseline for continued study of further specialized measurement and analysis tools of cavitation behavior.	en
dc.description.mark
dc.format	82
dc.format.extent	Grafy, Tabulky 1 ROM containing: - source files and executable for CavTools Analysis Tool - a copy of the masters thesis text - an archive of the originally used dataset - reference outputs for double bubble setup (5 mm and 8 mm)
dc.identifier.signature	V 201901430
dc.identifier.uri	https://dspace.tul.cz/handle/15240/153977
dc.language.iso	an
dc.relation.isbasedon	matsymblbrack1matsymbrbrack BRENNEN, Christopher E. Cavitation and bubble dynamics. New York: Oxford University Press, 1995. ISBN 0195094093.
dc.relation.isbasedon	vsp5mm matsymblbrack2matsymbrbrack FRANC, Jean-Pierre a Jean-Marie MICHEL. Fundamentals of cavitation. Boston: Kluwer Academic Publishers, c2004. ISBN 1402022328.
dc.relation.isbasedon	vsp5mm matsymblbrack3matsymbrbrack KIM, Ki-Han, Georges CHAHINE, Jean-Pierre FRANC a Ayat KARIMI. Advanced experimental and numerical techniques for cavitation erosion prediction. Dordrecht: Springer, [2014]. Fluid mechanics and its applications, v. 106.
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	High-speed camera	cs
dc.subject	PVDF sensor	cs
dc.subject	Measurement tool	cs
dc.subject	Bubble dynamics	cs
dc.subject	Image recognition	cs
dc.subject	C++	cs
dc.subject	Cavitation	en
dc.subject	High-speed camera	en
dc.subject	PVDF sensor	en
dc.subject	Measurement tool	en
dc.subject	Bubble dynamics	en
dc.subject	Image recognition	en
dc.subject	C++	en
dc.title	Analysis Tool for the Evaluation of Measurements of the Single Bubble and Bubbles Structures Dynamic	cs
dc.title	Analysis Tool for the Evaluation of Measurements of the Single Bubble and Bubbles Structures Dynamic	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	S17000390
local.identifier.stag	39422
local.identifier.verbis	kpw06584666
local.note.administrators	automat
local.poradovecislo	1430

Analysis Tool for the Evaluation of Measurements of the Single Bubble and Bubbles Structures Dynamic

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