dc.contributor	Machuta Jiří, doc. Ing. Ph.D. : 66939
dc.contributor.advisor	Fraňa Karel, prof. Ing. Ph.D. : 55679
dc.contributor.author	Hdaib, Mohammad Yousef Amer
dc.date.accessioned	2020-11-27T05:39:30Z
dc.date.available	2020-11-27T05:39:30Z
dc.date.committed	2021-4-30
dc.date.defense	2020-06-25
dc.date.submitted	2019-11-1
dc.date.updated	2020-6-25
dc.degree.level	Ing.
dc.description.abstract	In this study an experimental investigation was performed on foaming process of water-alcoholic mixtures. The aim of this study is to provide an illustration on foaming phenomena in water alcoholic-mixtures, and an investigation of its application in foaming process in molten metal. In the first and second sections of this study a comprehensive review was presented on physiochemical properties and theory of foaming process in both water-alcoholic mixtures and molten metal. In the third and fourth parts a description of the experimental setup and procedures were presented with results. In the last section a conclusion of results was presented. The used experiment has three main parts: in the first part best foaming conditions were specified by air injection in water-ethanol and water-isopropanol mixtures at different alcoholic volume fractions from 0 to 1 at 50 L/h flow rate and 20 seconds foaming time. While in the second part foaming behavior analyzed at different flow rate (15, 25, 50 and 75 L/h) and foaming time (20, 35, 55 seconds). In the third part, drainage velocity was calculated by using a proposed method based on literature data. Furthermore, an Image processing code was written to analyze experimental data. According to previous measured data, the dimensionless parameters: Reynolds, Marangoni, and Capillary numbers were calculated. The result of this study shows that, for water-isopropyl mixtures foam did not appear, while for water-ethanol mixtures a best foaming condition occurred at 0.15 ethanol volume fraction. Also, the drainage velocity was mainly a function of foam thickness.	cs
dc.description.abstract	In this study an experimental investigation was performed on foaming process of water-alcoholic mixtures. The aim of this study is to provide an illustration on foaming phenomena in water alcoholic-mixtures, and an investigation of its application in foaming process in molten metal. In the first and second sections of this study a comprehensive review was presented on physiochemical properties and theory of foaming process in both water-alcoholic mixtures and molten metal. In the third and fourth parts a description of the experimental setup and procedures were presented with results. In the last section a conclusion of results was presented. The used experiment has three main parts: in the first part best foaming conditions were specified by air injection in water-ethanol and water-isopropanol mixtures at different alcoholic volume fractions from 0 to 1 at 50 L/h flow rate and 20 seconds foaming time. While in the second part foaming behavior analyzed at different flow rate (15, 25, 50 and 75 L/h) and foaming time (20, 35, 55 seconds). In the third part, drainage velocity was calculated by using a proposed method based on literature data. Furthermore, an Image processing code was written to analyze experimental data. According to previous measured data, the dimensionless parameters: Reynolds, Marangoni, and Capillary numbers were calculated. The result of this study shows that, for water-isopropyl mixtures foam did not appear, while for water-ethanol mixtures a best foaming condition occurred at 0.15 ethanol volume fraction. Also, the drainage velocity was mainly a function of foam thickness.	en
dc.description.mark
dc.format	61
dc.format.extent	Ilustrace, Schémata, Grafy, Tabulky
dc.identifier.signature	V 202002424
dc.identifier.uri	https://dspace.tul.cz/handle/15240/158266
dc.language.iso	an
dc.relation.isbasedon	beginenumerate itemJ. J. Bikerman, Foams, Springer, 978-3-642-86736-1, 1973. itemHenry Z. Kister ,Distillation Operation, McGraw Hill Professional, 007034910X, 9780070349100, 1990 itemNihad Dukhan, Metal Foams: Fundamentals and Applications, DEStech Publications, 978-1-60595-014-3, 2013. itemJohn Banhart, , characterisation and application of cellular metals and metal foams, Pergamon, Volume 46, Issue 6 of Progress in materials science, ISSN: 0079-6425, 2001. endenumerate
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	foaming process	cs
dc.subject	surface activity	cs
dc.subject	Marangoni effect	cs
dc.subject	Image processing	cs
dc.subject	cross polarization	cs
dc.subject	surface tension	cs
dc.subject	foaming process	en
dc.subject	surface activity	en
dc.subject	Marangoni effect	en
dc.subject	Image processing	en
dc.subject	cross polarization	en
dc.subject	surface tension	en
dc.title	Experimental study of foaming agents in water and their application metal foaming.	cs
dc.title	Experimental study of foaming agents in water and their application in the metal foaming.	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	S18000209
local.identifier.stag	40665
local.identifier.verbis
local.identifier.verbis	kpw06669233
local.note.administrators	automat
local.note.secrecy	Povoleno ZverejnitPraci Povoleno ZverejnitPosudky
local.poradovecislo	2424

Experimental study of foaming agents in water and their application metal foaming.

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