Our Expertise | ENERGY

Numerical analyses of the heat transfer processes of a key cooling system in the ITER reactor

Supporting the design of a critical system with realistic numerical simulations of heat radiation and conjugate heat transfer

Newsletter EnginSoft Year 17 n°4
By Fabio Moretti and Fulvio Terzuoli | NINE - Nuclear and Industrial Engineering
Numerical analyses of the heat transfer processes of a key cooling system in the ITER reactor
Numerical analyses of the heat transfer processes of a key cooling system in the ITER reactor

Abstract

The ITER reactor’s electron cyclotron heating and current drive (EC H&CD) system launcher requires an effective cooling system due to the strong thermal loads it supports. In supporting the design of this cooling system, NINE performed several numerical studies using the Ansys simulation tools to:

  • calculate the distribution of the heat flux on the plasmafacing materials by computing the radiation view factors;
  • conduct a computational fluid dynamics (CFD) conjugate heat transfer analysis of the launcher’s structures and cooling circuits, while accounting for thermal loads such as plasma heat radiation, microwave stray radiation, and power deposition from neutron and gamma radiation;
  • estimate the pressure losses along the cooling circuits.

These analyses are part of a wider workflow carried out in a collaboration with other partners. The results of the above-mentioned simulations were then transferred to other analysts for the launcher’s structural integrity checks.

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