Quote:
|
Originally Posted by Incoherent
I can probably extract the average temperature of a "cut" through the hole centre from the Femlab model. Would that be more appropriate do you think?
|
Yes
More:
Accept modeling of fluxbloc-die is required to account for holes
Think centreline Femlab is best option to identify with measured Ts .
With proviso that h(eff) fb-surface effect on Ls should be taken into account.Range which interests us here is ~45,000 to 70,000*
Which configuration is the L set "0.000, 1.976, 3.953, 3.953,6.030,11.105,13.456" obtained? "h(eff)=20,000 on 50x50x5 bp" gives h(eff) fb-surface=77,519W/m^2C, whilst "h(eff)=50,000 on 30x30x2bp" gives h(eff) fb-surface=88,496. If both give same set may have issue with their modeling of bp, terminology, or suspect accuracy of model.
Think centreline Femlab is inappropriate for C/W(wb+TIM)
Here an average fb-surface is required.
* Edit1 - forgot TIM Edit2- forgot water temp rise (sig at low h) Edit3 -None yet