Abstract: A steady two-dimensional nanofluid flow along a flat surface is investigated with two types of physical models. A theoretical and numerical study is performed for three different nanofluids, in which Al2O3, TiO2, and Fe3O4 particles are dispersed in a water-based fluid. We find numerical results using Computational Fluid Dynamics (CFD) simulations and the Blasius similarity transformations. The effect of the amount of solid particles of up to a concentration of 4% on the flow and heat transfer characteristics is also analysed. The skin friction and the Nusselt number increase with the volume fraction of the nanoparticles. These properties are different for the Al2O3 water-based nanofluid and the other two nanofluids. The effect of the volume fraction of the nanofluid on the change in the skin friction coefficient and Nusselt number is investigated by both methods. The differences of the results obtained with the use of the two models are analysed depending on the nanoparticle concentration and the method.
Comparison of Similarity and Computational Fluid Dynamics Solutions for Blasius Flow of Nanofluid / Bognar, G.; Klazly, M.; Mahabaleshwar, U. S.; Lorenzini, G.; Hriczo, K.. - In: JOURNAL OF ENGINEERING THERMOPHYSICS. - ISSN 1810-2328. - 30:3(2021), pp. 461-475. [10.1134/S1810232821030103]
Comparison of Similarity and Computational Fluid Dynamics Solutions for Blasius Flow of Nanofluid
Lorenzini G.
;
2021-01-01
Abstract
Abstract: A steady two-dimensional nanofluid flow along a flat surface is investigated with two types of physical models. A theoretical and numerical study is performed for three different nanofluids, in which Al2O3, TiO2, and Fe3O4 particles are dispersed in a water-based fluid. We find numerical results using Computational Fluid Dynamics (CFD) simulations and the Blasius similarity transformations. The effect of the amount of solid particles of up to a concentration of 4% on the flow and heat transfer characteristics is also analysed. The skin friction and the Nusselt number increase with the volume fraction of the nanoparticles. These properties are different for the Al2O3 water-based nanofluid and the other two nanofluids. The effect of the volume fraction of the nanofluid on the change in the skin friction coefficient and Nusselt number is investigated by both methods. The differences of the results obtained with the use of the two models are analysed depending on the nanoparticle concentration and the method.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
