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doctoral thesis
Numerical simulation of metal materials quenching by applying Eulerian two-fluid model
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2023. urn:nbn:hr:235:117642
Cukrov, Alen
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

Cite this document

Cukrov, A. (2023). Numerical simulation of metal materials quenching by applying Eulerian two-fluid model (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:117642

Cukrov, Alen. "Numerical simulation of metal materials quenching by applying Eulerian two-fluid model." Doctoral thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2023. https://urn.nsk.hr/urn:nbn:hr:235:117642

Cukrov, Alen. "Numerical simulation of metal materials quenching by applying Eulerian two-fluid model." Doctoral thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2023. https://urn.nsk.hr/urn:nbn:hr:235:117642

Cukrov, A. (2023). 'Numerical simulation of metal materials quenching by applying Eulerian two-fluid model', Doctoral thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 25 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:117642

Cukrov A. Numerical simulation of metal materials quenching by applying Eulerian two-fluid model [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2023 [cited 2024 December 25] Available at: https://urn.nsk.hr/urn:nbn:hr:235:117642

A. Cukrov, "Numerical simulation of metal materials quenching by applying Eulerian two-fluid model", Doctoral thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:235:117642

Metadata
TitleNumerical simulation of metal materials quenching by applying Eulerian two-fluid model
Title (croatian)Numerička simulacija gašenja metalnih materijala primjenom Eulerova dvofluidnoga modela
AuthorAlen Cukrov
MentorIvanka Boras (mentor)
Committee memberŽeljko Tuković (predsjednik povjerenstva)
Committee memberYohei Sato https://orcid.org/0000-0001-5313-5767 (član povjerenstva)
Committee memberBojan Ničeno (član povjerenstva)
VIAF: 282070885
Committee memberDarko Landek (član povjerenstva)
Committee memberSeverino Krizmanić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2023-02-10, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Universal decimal classification
(UDC)		53 - Physics
51 - Mathematics
Abstract
A novel approach for the solution of mass transfer within the framework of the multi-fluid model supplemented with the Volume of Fluid (VOF) method, i.e. two-fluid VOF, is presented in this thesis. The governing equation set is comprised of mass, momentum, and energy conservation equations, written on a per-phase basis and supplemented with closure models via the source terms. In our method, the heat and mass transfer are calculated from the heat transfer coefficient, which has a fictitious function and depends on the local cell size and the thermal conductivity, and the implementation is straightforward because the local value is used instead of a global parameter. The interface's sharpness is ensured by the application of the geometrical reconstruction scheme implemented in VOF. The model is verified for three types of computational meshes, including triangular cells, and good agreement was obtained for the interface position and the temperature field. The straightforward application to the engineering problem of film boiling around a cylinder specimen has been carried out by supplementing the model with the prescribed turbulent kinetic energy value and, later on, in the application section, mesh motion.
Abstract (croatian)
Novi pristup za rješavanje prijenosa mase unutar okvira višefluidnoga modela potpomognutog metodom volumnog udjela fluida (engl. Volume-of-fluid, VOF), tj., dvofluidnoga VOF modela, je predstavljen u ovom radu. Skup jednadžbi održanja je sastavljen od zakona očuvanja mase, količine gibanja i energije, zapisan za svaku od faza i nadopunjen dopunskim relacijama putem izvorskih članova. U predloženoj metodi, prijenos topline i mase je računat na temelju koeficijenta prijelaza topline, koji ima fiktivnu ulogu te ovisi o lokalnoj veličini ćelije i toplinskoj provodnosti, te čija je implementacija jednostrana uslijed korištenja lokalnih vrijednosti umjesto globalnog parametra. Glatkoća, tj. oštrina granice faza je osigurana primjenom sheme geometrijske rekonstrukcije (engl. geometrical reconstruction scheme) ugrađene u VOF metodu. Model jer verificiran za tri tipa računalne (numeričke) mreže uključujući pritom i trokutne kontrolne volumene, te je postignuto zadovoljavajuće slaganje položaja granice faza i temperaturnog polja. Jednostrana primjena na inženjerski problem filmskog isparivanja oko cilindričnog uzorka jer provedena nadopunjujući model s unaprijed zadanom vrijednošću kinetičke energije turbulencije te, kasnije, u odjeljku s primjenom metode, gibajućom mrežom.
Keywords
Keywords (croatian)
Languageenglish
URN:NBNurn:nbn:hr:235:117642
Study programmeTitle: Mechanical Engineering and Naval Architecture
Study programme type: university
Study level: postgraduate
Academic / professional title: doktor/doktorica znanosti, područje tehničkih znanosti (doktor/doktorica znanosti, područje tehničkih znanosti)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2023-02-17 13:52:52