Natural Convection over a vertical wall

Sireesha Pasari

hello all,

I am relatively new to using fluent, Kindly forgive me if i am wrong anywhere. I am trying to perform natural convection over a vertical thin wall (wall thickness = 0), and calculate heat flux along the wall surface, temperature variation and velociy distribution.

modelled as a box : left, top, right, bottom

this is how my boundary conditions are:

(units same as in fluent)

wall definied to the left wall properties: heat transfer coeffecient: 6.8085 calculated from nussles number and thermal conducivity and wall length, Free sream temperature:290K wall temperature = 310K

inlet at the bottom (pressure inlet): inlet temperaure = 290K

outlet at the top (pressure outlet) : backflow emperature 290K

symmetry defined to the right

wall lenghth: 0.04 m

operating conditions : gravity = -9.81

maerial properties (air)

density (bossique eq): 1.177 Cp = 1005 thermal conductivity (K) = 0.0267 viscosity = 1.845E-5 prandtl number = 0.69 -> calculated from alpha = 0.2216e-6 m^2/s, and viscosity = 16.84E-6 at 300K

I am aable to obain the curves for temperature and velocity, and theoritically they appear to be correct, but i am not able to obtain the heat flux (fluent gives me 0) i did not make any changes to reference values under report in fluent.

PLease help me, as I feel I am lost in this.

Thank you all in Advance

Sireesha Pasari