Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Heat transfer enhancement in a cubical cavity filled with a hybrid nanofluid
https://orcid.org/0000-0001-5176-0235
https://orcid.org/0000-0002-2325-1502
AbstractMixed convection heat transfer in a cubical cavity with an isothermally heated blockage inside filled with a hybrid nanofluid (HBNF) is numerically studied. The natural convection is created by the temperature difference between the hot block and the cold lateral walls, while the forced convection is generated by moving the upper wall. The influence of some variables, like the aspect ratio (0.1 ≤ r ≤ 0.5), Richardson number (0 ≤ Ri≤ 20), Reynolds number (50 ≤ Re ≤ 200), volume concentration of nanoparticles (0 ≤ ϕ ≤ 0.06), and the concentration ratio (2:8, 5:5, and 8:2) on the flow field and heat transfer is analyzed. A comparison between hybrid and mono nanofluids (NFs) is realized to investigate the energy transport enhancement. Results show that the increase of each parameter causes an increase of average Nusselt numberNuavgand improves the heat transfer; besides the use of HBNF gives betterNuavgvalues. Three correlations of the effect ofr, ϕ,Ri, andReonNuavgare determined for both hybrid and mono NFs.
Heat transfer enhancement in a cubical cavity filled with a hybrid nanofluid
https://orcid.org/0000-0001-5176-0235
https://orcid.org/0000-0002-2325-1502
AbstractMixed convection heat transfer in a cubical cavity with an isothermally heated blockage inside filled with a hybrid nanofluid (HBNF) is numerically studied. The natural convection is created by the temperature difference between the hot block and the cold lateral walls, while the forced convection is generated by moving the upper wall. The influence of some variables, like the aspect ratio (0.1 ≤ r ≤ 0.5), Richardson number (0 ≤ Ri≤ 20), Reynolds number (50 ≤ Re ≤ 200), volume concentration of nanoparticles (0 ≤ ϕ ≤ 0.06), and the concentration ratio (2:8, 5:5, and 8:2) on the flow field and heat transfer is analyzed. A comparison between hybrid and mono nanofluids (NFs) is realized to investigate the energy transport enhancement. Results show that the increase of each parameter causes an increase of average Nusselt numberNuavgand improves the heat transfer; besides the use of HBNF gives betterNuavgvalues. Three correlations of the effect ofr, ϕ,Ri, andReonNuavgare determined for both hybrid and mono NFs.
Heat transfer enhancement in a cubical cavity filled with a hybrid nanofluid
https://orcid.org/0000-0001-5176-0235
https://orcid.org/0000-0002-2325-1502
AbstractMixed convection heat transfer in a cubical cavity with an isothermally heated blockage inside filled with a hybrid nanofluid (HBNF) is numerically studied. The natural convection is created by the temperature difference between the hot block and the cold lateral walls, while the forced convection is generated by moving the upper wall. The influence of some variables, like the aspect ratio (0.1 ≤ r ≤ 0.5), Richardson number (0 ≤ Ri≤ 20), Reynolds number (50 ≤ Re ≤ 200), volume concentration of nanoparticles (0 ≤ ϕ ≤ 0.06), and the concentration ratio (2:8, 5:5, and 8:2) on the flow field and heat transfer is analyzed. A comparison between hybrid and mono nanofluids (NFs) is realized to investigate the energy transport enhancement. Results show that the increase of each parameter causes an increase of average Nusselt numberNuavgand improves the heat transfer; besides the use of HBNF gives betterNuavgvalues. Three correlations of the effect ofr, ϕ,Ri, andReonNuavgare determined for both hybrid and mono NFs.
Heat transfer enhancement in a cubical cavity filled with a hybrid nanofluid
Heat Trans
Ghennai, Ahlam (Autor:in) / Bessaїh, Rachid (Autor:in)
Heat Transfer ; 50 ; 1658-1678
01.03.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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