Abstract
The present work deals with the numerical analysis of thermohydraulic performance of Al2O3-H2O based nanofluid flow through straight slot rib rectangular channel. The integration of the artificial roughness on the heated surface and use of the nanofluid as a heat transferring medium makes the present system efficient. Important parameters such as Reynolds number (Re) is selected in the range of 5000–8000, relative slot rib height (HSSR/DH) in the range of 0.060–0.084 and other parameters have been fixed are spanwise pitch (Pspan/HSSR) 4.07, streamwise pitch (PStream/HSSR) is 7.6, nanoparticle concentration (∅) is 3% and nanoparticle diameter (nd) of 40 nm. The analysis resulted in the maximum value of Nusselt number (Nurough) and friction factor (frough) at value of Relative height ratio (HSSR/DH) of 0.084 and 0.06, respectively. It is found that the value of relative slot rib height 0.084 delivers the highest thermohydraulic performance (η) in comparison to other values of geometric parameters.
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