surface heat flux problem
surface heat flux problem
(OP)
hi all
i am doing a thermal analysis on a spindle. spindle got bearings inside. i did some tests on the real machine and i got the temperatures on the spindle surface as 27C running the machine for 1 hour. ambient temp was 23.5C. i dont know the bearing temp because of no access to the bearings, niether i want to apply temperature BC on the bearings because i want a gradual increase with time in thermal graph.
now to replicate i am applying surface heat flux in Abaqus. i calculated surface heat flux using q=kdt/L which can calculate 1D heat flux and it is obtained to be a bit high. Another option to use is Q=mcpdt which can calculate Energy but Abaqus only allows to put surface, body or concentrated heat fluxes. As my model in 3D could any one knows
1) how surface heat flux would be calculated?.
2) Could Q=mcpdt be used for it?
I would be grateful if i get any answers to this
Regards
i am doing a thermal analysis on a spindle. spindle got bearings inside. i did some tests on the real machine and i got the temperatures on the spindle surface as 27C running the machine for 1 hour. ambient temp was 23.5C. i dont know the bearing temp because of no access to the bearings, niether i want to apply temperature BC on the bearings because i want a gradual increase with time in thermal graph.
now to replicate i am applying surface heat flux in Abaqus. i calculated surface heat flux using q=kdt/L which can calculate 1D heat flux and it is obtained to be a bit high. Another option to use is Q=mcpdt which can calculate Energy but Abaqus only allows to put surface, body or concentrated heat fluxes. As my model in 3D could any one knows
1) how surface heat flux would be calculated?.
2) Could Q=mcpdt be used for it?
I would be grateful if i get any answers to this
Regards





RE: surface heat flux problem
corus
RE: surface heat flux problem
thanks corus for your valuable suggestion. i first try to know what my internal temperautre is by some means.
Regards