Dynamic analysis of the COMPASS-U tokamak for the design of foundation
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Dynamic analysis of the COMPASS-U tokamak for the design of foundation
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
<a href="/en/project/EF16_019%2F0000768" target="_blank" >EF16_019/0000768: COMPASS-U: Tokamak for cutting-edge fusion research</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Fusion Engineering and Design
ISSN
0920-3796
e-ISSN
1873-7196
Volume of the periodical
182
Issue of the periodical within the volume
September
Country of publishing house
CH - SWITZERLAND
Number of pages
12
Pages from-to
113221
UT code for WoS article
000831064500003
EID of the result in the Scopus database
2-s2.0-85133470698