In this paper, a numerical simulation has been performed to study the fluid fllow and heat transfer
around a circular cylinder utilizing Cu and TiO2 water-based nanofluids over low Reynolds numbers. Here,
the Reynolds number is varied within the range of 1 to 40 and the volume fraction of nanoparticles (ᵩ) is
varied within the range of 0 < ᵩ < 0.05. Two-dimensional and steady mass continuity, momentum, and
energy equations have been discretized using finite volume method. SIMPLE algorithm has been applied
for solving the pressure linked equations. The effect of volume fraction of nanoparticles on fluid flow and
heat transfer were investigated numerically. It was found that at a given Reynolds number, the Nusselt
number, drag coefficient, re-circulation length, and pressure coefficient increases by increasing the volume
fraction of nanoparticles