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Search: Posts Made By: macfly
Forum: FLUENT September 18, 2013, 13:12
Replies: 13
Views: 1,748
Posted By macfly
There is no shadow wall in the Fluent user guide,...

There is no shadow wall in the Fluent user guide, it's not the same situation.

You have to put some thinking when doing energy balance, you cannot just select everything and abracadabra. Your case...
Forum: FLUENT September 18, 2013, 09:51
Replies: 13
Views: 1,748
Posted By macfly
then the energy balance is just fine draw a...

then the energy balance is just fine

draw a control volume around water only, and look what goes in and out : 377094.3 W - 376693.0 W - 401.2 = 0.1 W
Forum: FLUENT September 18, 2013, 07:53
Replies: 13
Views: 1,748
Posted By macfly
The net result of 401.2946 W looks like the 401.2...

The net result of 401.2946 W looks like the 401.2 W across interface_1. Is it possible that interface_2 and part-fins are within the PCM? interface_1 is the only boundary between water and PCM? If...
Forum: FLUENT September 17, 2013, 22:06
Replies: 13
Views: 1,748
Posted By macfly
Look at the picture, it makes no sense if you...

Look at the picture, it makes no sense if you select both -75 and 75 W fluxes in the energy balance. 75 W remains in the volume and energy balance across boundaries is ok: 100 - 75 - 25 = 0
I don't...
Forum: FLUENT September 17, 2013, 08:21
Replies: 13
Views: 1,748
Posted By macfly
select - inlet - outlet - either all...

select
- inlet
- outlet
- either all positive or all negative remaining boundaries

it should balance
Forum: FLUENT September 16, 2013, 16:57
Replies: 13
Views: 1,748
Posted By macfly
I guess there is a wall and its shadow...

I guess there is a wall and its shadow counterpart on the boundary of the phase change material? You can see that the heat flux is the same on each side but with opposite sign, just unclick one of...
Forum: FLUENT September 15, 2013, 20:32
Replies: 13
Views: 1,748
Posted By macfly
that's why

that's why
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