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Title:Modeliranje in simulacije tranzientnih in neuniformnih toplotnih obremenitev prve stene iter w
Authors:ID Kokovnik, Jakob (Author)
ID Ravnik, Jure (Mentor) More about this mentor... New window
ID Kos, Leon (Comentor)
Files:.pdf MAG_Kokovnik_Jakob_2026.pdf (18,96 MB)
MD5: B174C34847D148B2F78784962D3FAC7C
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Abstract:V magistrskem delu je v odprtokodnem okolju OpenFOAM razvit model za izračun prevoda toplote v panelu prve stene fuzijskega reaktorja ITER. Razvita sta lastni robni pogoj, ki prostorsko neenakomerno in časovno odvisno gostoto toplotnega toka iz oblaka točk preslika na računsko mrežo, ter prediktivni algoritem, ki časovni korak vnaprej določi iz znanega poteka obremenitve. Med tremi interpolacijskimi pristopi se je kot najnatančnejša izkazala interpolacija z radialnimi baznimi funkcijami. Pri dejanskem primeru obremenitve prve stene je izračun z adaptivnim razporedom približno 26-krat hitrejši od referenčnega izračuna s konstantnim korakom 0,01 s, ob praktično nespremenjenem poteku najvišje temperature.
Keywords:ITER, prva stena, prevod toplote, OpenFOAM, adaptivni časovni korak, robni pogoj, interpolacija, radialne bazne funkcije
Place of publishing:Maribor
Year of publishing:2026
PID:20.500.12556/DKUM-99656 New window
Publication date in DKUM:04.09.2026
Views:161
Downloads:9
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FS
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Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:22.08.2026

Secondary language

Language:English
Title:Modelling and simulations of transient and nonuniform iter w first wall heat loads
Abstract:This masters thesis presents a model for computing heat conduction in a first wall panel of the ITER fusion reactor, developed in the open-source environment OpenFOAM. Two components were developed: a custom boundary condition that maps a spatially non-uniform and time-dependent heat flux from a point cloud onto the computational mesh, and a predictive algorithm that determines the time step in advance from the known load history. Of the three interpolation approaches compared, radial basis function interpolation proved the most accurate. For the actual first wall load case, the computation with the adaptive schedule is roughly 26 times faster than the reference computation with a constant step of 0,01 s, while the peak temperature history remains practically unchanged.
Keywords:ITER, first wall, heat conduction, OpenFOAM, adaptive time step, boundary condition, interpolation, radial basis functions


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