Abstract:
The research is conducted to find out the critical width of insulation in air insulated walls seen in residential buildings and industrial furnaces.
Natural convection between two differentially heated walls have been simulated using ANSYS FLUENT in both steady and transient conditions.
To simulate different heat transfer and fluid flow conditions, Rayleigh number ranging from 103 to 105 has been maintained (i.e. Laminar flow.)
In case of steady state analysis, the cfd predictions are in very good agreement with the literature reviewed data.
Transient simulation process has been performed by, using USER DEFINED FUNCTIONS, where the temperature of the hot wall varies with time in a sinusoidal manner.
To obtain and compare the heat transfer properties, Nusselt Number has been calculated at the hot wall at different conditions.
The buoyancy driven flow characteristics have been investigated by observing the flow pattern in a graphical manner.
The characteristics of the system at different temperature differences between the wall has been observed and documented.
