Learning Forum

[al al]

first,  why when I reterun to a project that I bild yesterday or when I try deffine a new metiriel i alweyes get this. I take my modle from solid and when I dont change matiriel its fine

 

second, I what to cheack the effect of air pocket on my thermal analys (there is no air flow, the air is static) so as I show in the next pic (I circled it in red)

 I add to my box anther layer of shell metiriel. do I need to defined that the inside of the air pocket I have a static air? or the ansys know alone that if I dont define metiriel in a empty space (not on my geometry) its air?

I using steady state thermal

 

[Ashish Khemka]

Hi,

In a steady state thermal analysis we generally define convection b.c. to simlate the fluid surrounding the structure. Do you have the film coefficient and ambient temperature for static air (ideally film coefficient should be zero for static air)? If you do not define any b.c. then it will be considered an adiabatic surface.

Regards,

Ashish Khemka

[al al]

Hi

the air temperature should be 60[c], In the frum of fluid they reccomend me to use cfd (fluid flow) do you think it either?

and can you tell me way every time I open the project or change metirial I get error like in the picture I add previous?