Page 189 - Fundamentals of Magnetic Thermonuclear Reactor Design
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170 Fundamentals of Magnetic Thermonuclear Reactor Design
FIGURE A.5.13 Thermal–hydraulic model of CS-ACB.
A.5.1.3.3 Model of PF Magnet System
The ITER PF magnet system comprises six PF coils and 18 correction coils
hydraulically connected in parallel in a common cooling circuit. Each PF coil
is formed by DP wound with a NbTi CICC in the two-in-hand manner. Every
PF pancake is modelled individually in a quasi-3D approximation and then in-
tegrated in a general PF magnet model. As an example, the thermal–hydraulic
model for PF1 is presented in Figs A.5.15 and A.5.16.
Interturn and interpancake heat transfer is simulated using a 2D non-sta-
tionary heat conduction over modelled PF1-PF6 cross-sections. The mesh has a
6
total of 3.155 10 nodes. Fig. A.5.17 shows a hydraulic layout for the common
cooling circuits for 6 PF coils and 18 CC. A thermal–hydraulic model for PF-
ACB is shown in Fig. A.5.18.
A.5.1.4 Mitigation of Pulsed Heat Loads
Fusion reactor cryogenic systems must cope with large pulsed heat loads gen-
erated in superconducting magnets due to the field-repeatable variations and
neutron flux production during fusion experiments.
