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The turbulent natural convection in a two dimension rectangular
enclosure with vertical divisions is investigated in this
thesis by using numerical calculations.The numerical simulation
model is based on the computational fluid dynamic software－
PHOENICS.In the model, horizontal walls and partitions are
assumed to be adiabatic while the vertical walls are maintained
at constant temperatures.The numerical calculations are carried
out with air as working fluid Prandtl number is 0.71, for
Rayleigh numbers in the range 1.17e8to 1.167e11 and aspect
ration from 1.0 to 0.5. The enlosure heat transfer is improved
as the Rayleigh numbers increase. The flow pattern and Nusselt
number are strongly affected by the height and the number of the
partitions.The simulation results arein good agreement with the
available experimental data.
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