Buoyancy heat transfer in staggered dividing square enclosure

الملخص EN

In this research, the Buoyancy heat transfer and flow patterns in a partially divided square enclosure with staggered partitions have been studied numerically.

The partitions were distributed on the lower and upper surfaces of the box in staggered manner.

The height of the partitions was varied.

The conduction heat transfer through the fins (partitions) was also included.

It is assumed that the vertical walls of enclosure were adiabatic and its horizontal walls were maintained at uniform but in different temperature.

The problem was formulated in terms of the stream function-vorticity procedure.

The numerical solution based on the transformation of the governing equations by using finite difference method was obtained.

The effect of increasing the partition height and Rayleigh number on contour maps of the stream lines and temperature were reported and discussed.

In addition, the research presented and discussed the results of the average Nussult number of the enclosures heated wall at various Rayleigh number and dimensionless partition heights.

The results showed that the mean Nussult number increases with the increasing of Rayleigh number and decreases with the increasing of partition heights.

The distributed heat by conduction through the partition increases with the increasing of the partition height especially at (H / L ≥ 0.3).

A comparison between the obtained results and the published computational studies has been made and it showed a good agreement with percentage error not exceed (0.54%) .