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Search took 0.00 seconds. Search: Posts Made By: TrII4d
Forum: CFX August 30, 2013, 05:39
Replies: 20
Views: 11,196
Posted By TrII4d
oh ok ... interesting study ... now i got your...

oh ok ... interesting study ... now i got your point ... i will try your alternative equation for the complex geometry (because in this case Q is not constant in space) ... hopefully i can give...
Forum: CFX August 30, 2013, 05:29
Replies: 20
Views: 11,196
Posted By TrII4d
okay this can be possible ... but in my case i...

okay this can be possible ... but in my case i always calculated steady state .... so there were only three options for BC and i chose two of them (Tw=const. or Q=konst.) ... but your statement is an...
Forum: CFX August 30, 2013, 03:49
Replies: 20
Views: 11,196
Posted By TrII4d
yeah i already used it ... your equation is...

yeah i already used it ...

your equation is still the same ... iam calculating with the heat flux and you are calculating with the heat flux density ... both is possible and both give the same...
Forum: CFX August 30, 2013, 02:20
Replies: 20
Views: 11,196
Posted By TrII4d
yes it is ... u will find this statement in "Heat...

yes it is ... u will find this statement in "Heat transfer coefficient calculation for analysis of ITER shield block using CFX and ANSYS" Xiujie Zhang et al., too.
Forum: CFX August 29, 2013, 10:15
Replies: 20
Views: 11,196
Posted By TrII4d
Post Summary

I did some small studies for a plate, cube and cylinder last week ...

the results are:
- calculating HTC with the formula in the first post and with the temperature (conservative) from the solid...
Forum: CFX April 17, 2013, 09:13
Replies: 20
Views: 11,196
Posted By TrII4d
hmm ... where exactly did u find the variable...

hmm ... where exactly did u find the variable 'surface temperature' in the docu?
can u tell me the version, name of the book and side pls (f.e. cfx 14.0 CFX-solver theory guide, page 55-56)
...
Forum: CFX April 17, 2013, 01:25
Replies: 20
Views: 11,196
Posted By TrII4d
hi ghorrocks, first of all ... thanks for ur...

hi ghorrocks,

first of all ... thanks for ur great support!



that's why i would prefer hybrid values (sounds more logical for me if i check the theory of heat transfer)
Forum: CFX April 16, 2013, 01:33
Replies: 20
Views: 11,196
Posted By TrII4d
yeah that was my first impression, too ... and of...

yeah that was my first impression, too ... and of course ... if i calculate the HTC with the temperature of the solid domain i will get a "better" result.

"better" means that the value is closer...
Forum: CFX April 15, 2013, 08:20
Replies: 20
Views: 11,196
Posted By TrII4d
Manual calculation of Heat Transfer Coefficient

hey there,

i know this subject was discussed for many times ... but i didn't find the answer in one of this thousands threats.

of course the calculation for the HTC for laminar flow and steady...
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