Numerical studies on the effects of volumetric concentration of Al 2 O 3-water nanofluid
during low flow rates convection boiling in a vertical annulus is carried out. The aspect ratio
of the vertical annulus is 352 while the annular gap is 3.5 mm. The Fluent code is developed
using the RPI wall boiling model. The Fluent code is verified with the results available in the
literature and also with the results on a similar experimental set-up which shows excellent
agreement. The results show that for maximum heat transfer the volumetric concentration of …