BibTeX:

@article{IJIRSTV2I11104,
     title={Heat Transfer Characteristics inside a Bottom Heated Square Enclosure},
     author={Vineeth V.K, Vibu Mammen Jacob, Linoj V Lalu, Ligit George and Stephen Jose Mathew},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={2},
     number={11},
     pages={356--365},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV2I11104.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

The present work deals with numerical study of natural convective heat transfer in a 2D square enclosure heated from below. The top wall is exposed to ambient temperature whereas the side walls are kept adiabatic. The study is conducted for different conducting mediums inside. The conducting mediums considered for the study are air and Al2O3-water nanofluid. Simulations are run for a Rayleigh Number variation of 5x107 to 25x107. The heat transfer rate is found to increase with increase in hot wall temperature. For air, the thermal interactions are achieved through bulk motion of fluid. For Al2O3-water nanofluid, the mechanism of heat transfer is attained through local fluid interactions. But the nanofluids are also found to exhibit bulk movement at higher hot wall temperatures. Numerical study was done using FLUENT 14.0.

Isotherms, Nano Fluid, Natural Convection, Rayleigh Number, Square Enclosure, Streamlines