Author/Authors :
Ashouri, Hadighe Physics Department - University of Guilan, Rasht , Ghasemizad, Abbas Physics Department - University of Guilan, Rasht , Sadatkiae, Mahmoud Nuclear Science and Technology Research Institute (NSTRI) - Nuclear Science Research School - A.E.O.I, P.O. Box 14155‑1339, Tehran , Seddighzade, Asghar Nuclear Science and Technology Research Institute (NSTRI) - Nuclear Science Research School - A.E.O.I, P.O. Box 14155‑1339, Tehran
Abstract :
The objective of this work is to study the effect of using nanofluids as coolant on divertor system of fusion reactors which is known to be subjected to high heat loads coming from the plasma. Turbulent force convective heat transfer of water-based Al2O3 nanofluid flowing through the CuCrZr cooling tube of a small scale of mock up made of five tungsten monoblocks has
been numerically investigated using single phase model. Computational fluid dynamic approach has been applied by using
CFD software FLUENT 6.3.26. The computed results have been validated by traditional corrections expression reported by
previous works. The dependence of temperature contours and profiles on volume fraction of nanofluids for different walls of
this monoblock has been studied and compared with pure water. The maximum allowed temperature of the candidate material
under unusual situation of a fusion reactor has been considered and compared with the maximum temperatures resulted
from the CFD results. The effects of various nanofluid concentrations and Reynolds numbers on average Nusselt number
have been also investigated. The results show a significant improvement in heat removal from the divertor under the cooling
of alumina/water nanofluid with respect to pure water.
Keywords :
Fusion reactor , Divertor , Nano fluid , Heat transfer , Single phase , CFD
