Numerical studies are reported for steady, two-dimensional natural convection in a rectangular cavity with a finite, isothermal heat source centrally located on one vertical wall. The effects of changing the cavity height on temperature and flow fields, and the heat transfer rates are studied for various size of heat source and Rayleigh number up to 1000. As the aspect ratio is increased, the portion of the lower half of the cavity, significantly influenced by the buoyancy-driven flow tends to be a smaller percentage of the total domain. The heat transfer rate monotonically increases with the Rayleigh number and the length of the heated segment. There exists a critical aspect ratio as a function of Rayleigh number and the size of the heat source, for which the heat transfer rate is maximum.
|Original language||English (US)|
|Number of pages||8|
|Journal||American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD|
|State||Published - Dec 1 1986|