Dynamic analysis of the COMPASS-U tokamak for the design of foundation
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F22%3A00560197" target="_blank" >RIV/61389021:_____/22:00560197 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.sciencedirect.com/science/article/pii/S0920379622002174?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0920379622002174?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.fusengdes.2022.113221" target="_blank" >10.1016/j.fusengdes.2022.113221</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Dynamic analysis of the COMPASS-U tokamak for the design of foundation
Popis výsledku v původním jazyce
The COMPASS-U tokamak is currently at the final design stage. In order to design safe and reliable foundation slab for the machine, a dynamic analysis of the deformations and stresses during the most severe plasma disruptions was necessary. A global FEM model has been built including simplified geometry of the entire tokamak as well as the foundation slab and its supporting concrete pillars and the surrounding soil. Vertical forces from the worst-case axisymmetric plasma disruption scenarios were applied to the vacuum vessel and the coil system (CS, PF, TF), causing vibration of the entire tokamak. The deformations and stresses transmitted to the anchors in the reinforced concrete slab were computed. Based on the presented model, the initial thickness of the concrete slab of 1 m was decreased by 20% to 0.8 m for the final design. Maximum tensile stress of 1.71 MPa was found in the brittle concrete, indicating that no cracking will occur during the worst-case axisymmetric disruptions. Motion of the vacuum vessel due to vertical forces was analyzed, showing maximum deformations below 1.13 mm over the course of the worst disruption. Velocities below 0.29 m/s and accelerations below 287 m/s2. The computational cost was analyzed in details, providing estimates for the computational time, RAM requirements of 25.8 GB/MDOF (77.4 GB/Mnode) and hard disc requirements for the results file of 0.5 GB/MDOF (1.5 GB/Mnode) for each transient time step.
Název v anglickém jazyce
Dynamic analysis of the COMPASS-U tokamak for the design of foundation
Popis výsledku anglicky
The COMPASS-U tokamak is currently at the final design stage. In order to design safe and reliable foundation slab for the machine, a dynamic analysis of the deformations and stresses during the most severe plasma disruptions was necessary. A global FEM model has been built including simplified geometry of the entire tokamak as well as the foundation slab and its supporting concrete pillars and the surrounding soil. Vertical forces from the worst-case axisymmetric plasma disruption scenarios were applied to the vacuum vessel and the coil system (CS, PF, TF), causing vibration of the entire tokamak. The deformations and stresses transmitted to the anchors in the reinforced concrete slab were computed. Based on the presented model, the initial thickness of the concrete slab of 1 m was decreased by 20% to 0.8 m for the final design. Maximum tensile stress of 1.71 MPa was found in the brittle concrete, indicating that no cracking will occur during the worst-case axisymmetric disruptions. Motion of the vacuum vessel due to vertical forces was analyzed, showing maximum deformations below 1.13 mm over the course of the worst disruption. Velocities below 0.29 m/s and accelerations below 287 m/s2. The computational cost was analyzed in details, providing estimates for the computational time, RAM requirements of 25.8 GB/MDOF (77.4 GB/Mnode) and hard disc requirements for the results file of 0.5 GB/MDOF (1.5 GB/Mnode) for each transient time step.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10305 - Fluids and plasma physics (including surface physics)
Návaznosti výsledku
Projekt
<a href="/cs/project/EF16_019%2F0000768" target="_blank" >EF16_019/0000768: COMPASS-U: Tokamak pro špičkový výzkum jaderné fúze</a><br>
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2022
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Fusion Engineering and Design
ISSN
0920-3796
e-ISSN
1873-7196
Svazek periodika
182
Číslo periodika v rámci svazku
September
Stát vydavatele periodika
CH - Švýcarská konfederace
Počet stran výsledku
12
Strana od-do
113221
Kód UT WoS článku
000831064500003
EID výsledku v databázi Scopus
2-s2.0-85133470698