dc.contributor
dc.contributor.advisor
dc.contributor.author	Attia, Shehab Hassan
dc.contributor.other	Fraňa Karel, prof. Ing. Ph.D. Skolitel : 55679
dc.date.accessioned	2022-12-20T04:49:06Z
dc.date.available	2022-12-20T04:49:06Z
dc.date.committed	2021-10-31
dc.date.defense	2022-11-22
dc.date.submitted	2019-2-1
dc.date.updated	2022-11-28
dc.degree.level	Ph.D.
dc.description.abstract	The main aim of this study is to find criteria influencing the shapes of a gas bubbles rising in stagnant liquid experimentally to form foam. A testing facility with the high-speed camera was designed. The results obtained are presented in terms of dimensionless parameters i.e. Reynolds's, Morton's and Eötvös. Factors varied to test their dependency such as nozzle diameter (3 - 5 mm), rate of flow rate (15 and 130 l/h), viscosity, surface tension and density were changed in order to see their effect on the shape of the bubble, its velocity in the liquid, surface tension force, drag force and buoyancy force. In order to vary such parameters a water-ethanol mixture was used in the tank. Also the foam formed was examined using water ethanol mixture in predicting the Foam bubble behavior in multi-phase flow. The study compares the concept of formation of foam at the surface of the mixture with the procedure of producing aluminum foam by direct gas injection. Material properties such as kinematic viscosity, density and surface tension on the foaming process will be studied experimentally, while the foam bubble size will be studied by means of digital image processing.	cs
dc.description.abstract	The main aim of this study is to find criteria influencing the shapes of a gas bubbles rising in stagnant liquid experimentally to form foam. A testing facility with the high-speed camera was designed. The results obtained are presented in terms of dimensionless parameters i.e. Reynolds's, Morton's and Eötvös. Factors varied to test their dependency such as nozzle diameter (3 - 5 mm), rate of flow rate (15 and 130 l/h), viscosity, surface tension and density were changed in order to see their effect on the shape of the bubble, its velocity in the liquid, surface tension force, drag force and buoyancy force. In order to vary such parameters a water-ethanol mixture was used in the tank. Also the foam formed was examined using water ethanol mixture in predicting the Foam bubble behavior in multi-phase flow. The study compares the concept of formation of foam at the surface of the mixture with the procedure of producing aluminum foam by direct gas injection. Material properties such as kinematic viscosity, density and surface tension on the foaming process will be studied experimentally, while the foam bubble size will be studied by means of digital image processing.	en
dc.description.mark	S
dc.format	116
dc.format.extent	Ilustrace, Grafy, Tabulky None
dc.identifier.signature	D 202200108
dc.identifier.uri	https://dspace.tul.cz/handle/15240/166920
dc.language.iso	an
dc.relation.isbasedon
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	Metal Foam	cs
dc.subject	Hierarchical materials	cs
dc.subject	Ethanol Foam model	cs
dc.subject	Digital Image processing	cs
dc.subject	Metal Foam	en
dc.subject	Hierarchical materials	en
dc.subject	Ethanol Foam model	en
dc.subject	Digital Image processing	en
dc.title	Studying of the fluid's property adjustment and its application in metal foam industry	cs
dc.title	Studying of the fluid's property adjustment and its application in metal foam industry	en
dc.type	disertační práce	cs
local.degree.abbreviation	Doktorský
local.degree.discipline	KSA4
local.degree.programme	Machines and Equipment
local.degree.programmeabbreviation	P2302
local.department.abbreviation	KEZ
local.faculty	Fakulta strojní	cs
local.faculty.abbreviation	FS
local.identifier.author	S17000500
local.identifier.stag	42899
local.identifier.verbis
local.identifier.verbis	41c4de17-16b6-4223-8409-fcbcca23fde9
local.note.administrators	automat
local.note.secrecy	Povoleno ZverejnitPraci Povoleno ZverejnitPosudky
local.poradovecislo	108

Studying of the fluid's property adjustment and its application in metal foam industry

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