Large eddy and rans simulations of V-RIB structured cooling channels of the first wall of future fusion reactors

Tesis Energía y Ambiente (maestría) - Instituto Tecnológico de Buenos Aires - Karlsruher Institut für Technologie, Karlsruhe, 2020

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Autor principal: Winzig, Manuel
Otros Autores: Klein, Christine
Formato: Tesis de maestría
Lenguaje:Inglés
Publicado: 2023
Materias:
REACTORES NUCLEARES
ENERGIA NUCLEAR
FUSION NUCLEAR
Acceso en línea:https://ri.itba.edu.ar/handle/20.500.14769/4219
Aporte de:
Repositorio Institucional Instituto Tecnológico de Buenos Aires (ITBA) de Instituto Tecnológico de Buenos Aires (ITBA)
id I32-R138-20.500.14769-4219
record_format dspace
spelling I32-R138-20.500.14769-42192026-01-15T15:13:46Z Large eddy and rans simulations of V-RIB structured cooling channels of the first wall of future fusion reactors Winzig, Manuel Klein, Christine REACTORES NUCLEARES ENERGIA NUCLEAR FUSION NUCLEAR Tesis Energía y Ambiente (maestría) - Instituto Tecnológico de Buenos Aires - Karlsruher Institut für Technologie, Karlsruhe, 2020 This work contributes to the development of the future fusion reactor DEMO. It investigates the cooling of the first wall blankets by rib structured cooling channels. For this purpose, RANS simulations using the − − model and the Reynolds Stress Model as well as Large Eddy Simulation were carried out on a channel with V-shaped ribs on one side at a Reynolds number of = 1.56 ⋅ 10 As a working fluid helium was used at an operating pressure of = 8 . The relative roughness of the channel was ⁄ ℎ = 0.0461 and the rib pitch was ⁄ = 10. The focus of the analysis of the results has been on heat transfer quantities, pressure loss and flow patterns. It was shown that the rib induced vortical structures that were associated with a large increase in heat transfer downstream of the rib but also caused a heat transfer deterioration directly behind it. The comparison between the simulations has shown that the − − model resolves well the magnitude of the averaged heat transfer but fails to reproduce the flow patterns and friction factor accurately when compared to the Large Eddy Simulation. On the other side, the Reynolds Stress Model showed better accuracy resolving the flow patterns and friction factor but strongly underpredicts the heat transfer for the given case. Additionally, the results of the Large Eddy simulation have been compared to previous simulation results that have been conducted on a smooth and a rib structured channel with = 0.9 . It was shown that reducing the rib height led to a slight decrease in heat transfer on the rib structured side but also reduced the pressure loss significantly. 2023-07-27T16:02:31Z 2023-07-27T16:02:31Z 2020 Tesis de maestría https://ri.itba.edu.ar/handle/20.500.14769/4219 en application/pdf
institution Instituto Tecnológico de Buenos Aires (ITBA)
institution_str I-32
repository_str R-138
collection Repositorio Institucional Instituto Tecnológico de Buenos Aires (ITBA)
language Inglés
topic REACTORES NUCLEARES
ENERGIA NUCLEAR
FUSION NUCLEAR
spellingShingle REACTORES NUCLEARES
ENERGIA NUCLEAR
FUSION NUCLEAR
Winzig, Manuel
Large eddy and rans simulations of V-RIB structured cooling channels of the first wall of future fusion reactors
topic_facet REACTORES NUCLEARES
ENERGIA NUCLEAR
FUSION NUCLEAR
description Tesis Energía y Ambiente (maestría) - Instituto Tecnológico de Buenos Aires - Karlsruher Institut für Technologie, Karlsruhe, 2020
author2 Klein, Christine
author_facet Klein, Christine
Winzig, Manuel
format Tesis de maestría
author Winzig, Manuel
author_sort Winzig, Manuel
title Large eddy and rans simulations of V-RIB structured cooling channels of the first wall of future fusion reactors
title_short Large eddy and rans simulations of V-RIB structured cooling channels of the first wall of future fusion reactors
title_full Large eddy and rans simulations of V-RIB structured cooling channels of the first wall of future fusion reactors
title_fullStr Large eddy and rans simulations of V-RIB structured cooling channels of the first wall of future fusion reactors
title_full_unstemmed Large eddy and rans simulations of V-RIB structured cooling channels of the first wall of future fusion reactors
title_sort large eddy and rans simulations of v-rib structured cooling channels of the first wall of future fusion reactors
publishDate 2023
url https://ri.itba.edu.ar/handle/20.500.14769/4219
work_keys_str_mv AT winzigmanuel largeeddyandranssimulationsofvribstructuredcoolingchannelsofthefirstwalloffuturefusionreactors
_version_ 1865139727109193728

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