[vel]

Hi everyone.

I just started to use Fluent, and I have been trying to study a natural convection in a square cavity with a hot isothermal body.

I have different Rayleigh number( e03 to e06) and I'm varying rhe cavity dimensions of the geometry to obten the Rayleigh number that i wish.

Doing the simulation for e03 i had the results i expected ( I compared to a literature)
But for e04 the temperature and velocity countours were almost the same for e03. I can not understand why.

Geometry: a square with the vertical walls adiabatics and the horizontal walls isothermals( hot upper wall and cold bottom wall)

centered to the square cavity there is a square hot body(1/3 of the cavity) at the same temperature of the hot isothermal wall)

Any suggestion why the results do not change when i change the cavity dimensions?

Thanks in advance

[Cyrus69]

hi
can u send a pic from your geometry?