Abstract
A numerical study of the consequence of the corner roundness of a square cylinder and nanofluid volume fraction on the warmth transmission and fluid flow phenomenon were studied at low Re (\({ Re}=100\)). The existing nanofluid is made by blending the water with copper nanoparticles, and the blending percentage is in the range of 0–15 % and the corner radius is varying from 0.5D (circle) to 0.71D (square). The numerical solution is accomplished by a FVM-based code. The fluid flow and the warmth transmission characteristics of the sharp and curved surrounded square chamber were considered with the vorticity, isotherm contours, drag and lift coefficients, local Nusselt number \((\textit{Nu}_{\mathrm{local}})\) and average Nusselt number \((\textit{Nu}_{\mathrm{avg}})\) at various volume fractions and for several corner roundness. It is found that the heat transfer amount is maximum at \(r=0.51\), whereas at \(r=0.50\), the fluid forces are least for the every volume fractions.
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