The buoyancy-driven heat transfer performance of nanofluids in a square minienclosure has been investigated in the present numerical study. A two-dimensional two-phase mixture model has been developed, validated, and then used for the investigation. Pure water, aluminum oxide, copper, aluminum, and single-walled carbon nanotube nanofluids with base-fluid hybridization (water plus methanol) were used in analyzing the heat transfer performance. The flow as well as the heat transfer characteristics of nanofluids with different particle volume concentrations, particle diameters, and base-fluid hybridizations at different Grashof numbers G r were reported. A significant enhancement in the average Nusselt number was observed at high Grashof numbers, high particle volume concentrations, low particle diameters, and low methanol percentage in the base fluid. Two equivalent nanofluid pairs of 1 vol. % aluminum oxide ( d p = 30    nm ) and 1 vol. % copper ( d p = 100    nm ) as well as 1 vol. % single-walled carbon nanotube and 3 vol. % copper ( d p = 100    nm ) with similar heat transfer characteristics were observed in the present study. This provided a better switching option in choosing an efficient working fluid with minimum cost based on the cooling requirement. It was also observed that, by dispersing single-walled carbon nanotube nanoparticles, one could enhance the heat transfer characteristics of the base fluid containing methanol as antifreeze.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Buoyancy-Driven Heat Transfer Performance of Pure and Hybrid Nanofluids in Minienclosure


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2017-12-15


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    INVESTIGATION OF BUOYANCY-DRIVEN HEAT TRANSFER IN H.P COMPRESSOR DISC CAVITIES

    Fazeli, Seyed Mostafa / Kanjirakkad, Vasudevan / Long, Christopher | TIBKAT | 2021


    Investigation of Buoyancy-Driven Heat Transfer in H.P Compressor Disc Cavities

    Fazeli, Seyed Mostafa / Kanjirakkad, Vasudevan / Long, Christopher | AIAA | 2021


    Turbulent Convective Heat Transfer of Nanofluids

    Hosseini, S.H. / Javadi, S.M. / Ebrahimnia-Bajestan, E. | British Library Conference Proceedings | 2012


    Heat Transfer Nanofluids Based on Carbon Nanotube

    Hong, Haiping / Wensel, Jesse / Liang, Feng et al. | AIAA | 2006


    Hybrid DRP-BEM Method for Acoustics of Buoyancy Driven Plumes

    AlSalem, K. / DesJardin, P. E. / Taulbee, D. et al. | British Library Conference Proceedings | 2005