COMPASS-U Global Heat Balance Calculations

0572766 - ÚFP 2024 RIV US eng J - Journal Article
Zhang, H. - Titus, P. - Peterka, Matěj - Bartoň, Petr - Vondráček, Petr
COMPASS-U Global Heat Balance Calculations.
IEEE Transactions on Plasma Science. Roč. 51, č. 3 (2023), s. 922-926. ISSN 0093-3813. E-ISSN 1939-9375
R&D Projects: GA MŠMT(CZ) EF16_019/0000768
Institutional support: RVO:61389021
Keywords : Ansys * compass-u * global thermal analysis * heat balance
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 1.5, year: 2022
Method of publishing: Limited access
https://ieeexplore.ieee.org/document/10004489

COMPASS-U is a medium size, high magnetic field experimental tokamak ( R =0.9 m, Bt = 5 T, and Ip = 2 MA), built at the Institute of Plasma Physics, Czech Academy of Sciences (IPP-CAS). This global heat balance calculation for COMPASS-U was done at Princeton Plasma Physics Laboratory (PPPL). Based on our previous experience of building global thermal model for National Spherical Torus Experiment-Upgrade (NSTX-U) at PPPL, this 2-D global thermal model geometry represents a typical cross section of COMPASS-U machine. The model includes thermal radiation, conduction, and convection among components and also between the machine and outer environment. Helium gas heating/cooling was modeled with fluid element and surface element. This model was used to calculate component temperatures and heat distribution during heat up, cryogenic cool down, normal operation, and fault operation scenarios. Definition of 14 main thermal scenarios was provided by IPP-CAS. First nine are normal operation scenarios. Scenarios #10-#14 are fault scenarios. Some results of thermal scenario #5 will be given and discussed in this article, including peak temperatures, temperature ratcheting, energy distribution, and required cooling power.
Permanent Link: https://hdl.handle.net/11104/0343336