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Search: Posts Made By: Martin_Sz
Forum: CFX December 13, 2019, 05:06
Replies: 17
Views: 1,109
Posted By Martin_Sz
i have one idea can i make two variations...

i have one idea

can i make two variations with solvers thermal energy and air at 25

- for 1 bar i give standard gas parameters
- for 0.01 bar i decrease density of gas

will be this...
Forum: CFX December 13, 2019, 03:52
Replies: 17
Views: 1,109
Posted By Martin_Sz
Hello Ghorrocks Boundary conditions and solver...

Hello Ghorrocks
Boundary conditions and solver settings are the same like in the macro were i sent earlier .
Attachment macro




p.s
In later simulations i only simplify geometry
Forum: CFX December 13, 2019, 03:31
Replies: 17
Views: 1,109
Posted By Martin_Sz
So i do simplified case and optimum is...

So i do simplified case
and optimum is discrete transfer surfTOsurf inmy case but
after about 40 - 80 iterations i get error overflow.
I make many variants and problem is on ideal gas. Without...
Forum: CFX December 12, 2019, 04:00
Replies: 17
Views: 1,109
Posted By Martin_Sz
now everything seems ok - imbalances value is...

now everything seems ok - imbalances value is below 1 but when simulation reach about 0,5 physical time i have overflow
Forum: CFX December 12, 2019, 03:59
Replies: 17
Views: 1,109
Posted By Martin_Sz
code in attachments

code in attachments
Forum: CFX December 12, 2019, 00:27
Replies: 17
Views: 1,109
Posted By Martin_Sz
I have very high values of i-radiation on closed...

I have very high values of i-radiation on closed domains above 100.
Forum: CFX December 12, 2019, 00:09
Replies: 17
Views: 1,109
Posted By Martin_Sz
code sef

code


sef
Forum: CFX December 12, 2019, 00:08
Replies: 17
Views: 1,109
Posted By Martin_Sz
code below

code below
Forum: CFX December 11, 2019, 12:37
Replies: 17
Views: 1,109
Posted By Martin_Sz
And what about high initial temperature 2400 C...

And what about high initial temperature 2400 C which radiation and heat transfer models use??
Forum: CFX December 11, 2019, 09:16
Replies: 17
Views: 1,109
Posted By Martin_Sz
In my case i dont have any inlets and outlets

In my case i dont have any inlets and outlets
Forum: CFX December 11, 2019, 09:13
Replies: 17
Views: 1,109
Posted By Martin_Sz
Which solver do i need to setup for the case with...

Which solver do i need to setup for the case with closed domain and high temperature. Solvers for heat transfer, turbulence and most important radiation.
These solvers i need to define to transient...
Forum: CFX December 11, 2019, 06:02
Replies: 17
Views: 1,109
Posted By Martin_Sz
closed domains overflow problem

Hello
I have problem with overflow error

So i need to make heat transfer simulation in two cases
1) cooling from 2400 C to 70 C in 1 bar abs pressure
2) cooling from 2400 C to 70 C in 0,01...
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