| Authors | Ali Arefmanesh, Ali Akbar Abbasian Arani, Amirhoosien Niroumand |
|---|---|
| Journal | INT J REFRIG |
| Presented by | University of Kashan |
| Page number | 136-156 |
| Volume number | 78 |
| Paper Type | Full Paper |
| Published At | 2017 |
| Journal Grade | ISI |
| Journal Type | Electronic |
| Journal Country | Iran, Islamic Republic Of |
Abstract
A semi-analytical approach is proposed to solve the hydrodynamically fully developed and thermally developing flow and heat transfer of Al2O3-water nanofluid through N-sided polygonal ducts.Using the Galerkin weighted residuals method,closed-form solutions for the flow and temperature fields in various polygonal ducts for the constant wall temperature nduniformwallheatfluxboundaryconditionsareobtained.VariationsoftheNusseltnumber along the axial direction for different duct geometries and different volume fraction of the nanoparticles are presented. Comparisons of the results for special cases with the existing results from the literature indicate that the employed method is quite accurate.The results show that the heat transfer enhances with increasing the nanoparticles volume fraction.