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Search took 0.00 seconds. Search: Posts Made By: Daniel C
Forum: CFX February 9, 2013, 06:07
Replies: 15
Views: 1,894
Posted By Daniel C
I have an internal physical flow boundary that...

I have an internal physical flow boundary that provides my wall temperature Tw. The outside temperature is T0 = 20°C. From the Ansys Help I extracted that the total heat flux qw is calculated with...
Forum: CFX February 9, 2013, 05:30
Replies: 15
Views: 1,894
Posted By Daniel C
The outside is still air at 20°C. Do I have to...

The outside is still air at 20°C. Do I have to model the surrounding air to? Thought that 20°C and 5 w/(m²K) would be good initial approach, but cannot get a steady state with that.

If I apply a...
Forum: CFX February 8, 2013, 06:27
Replies: 15
Views: 1,894
Posted By Daniel C
So I need more accurate Boundary assumptions: ...

So I need more accurate Boundary assumptions:

1. Fixed Temperature --> What temperature level?
2. Heat Flux --> No reference values available
3. Heat Transfer Coefficient and outside...
Forum: CFX February 8, 2013, 05:21
Replies: 15
Views: 1,894
Posted By Daniel C
I am currently using V14. Is there any new option...

I am currently using V14. Is there any new option that I can tick on in my simulation model?

My first aim is to achieve an initial result without taking account on accuracy. So the ideal gas...
Forum: CFX February 8, 2013, 04:54
Replies: 15
Views: 1,894
Posted By Daniel C
Yes, I want to simulate the heat transfer....

Yes, I want to simulate the heat transfer. Therefore I have to model the housing and the rotor as a solid. The flow is driven by the rotor, that generates heat that is tranfered into the fluid...
Forum: CFX February 8, 2013, 02:50
Replies: 15
Views: 1,894
Posted By Daniel C
I am using different hexa meshes interconnected...

I am using different hexa meshes interconnected via interfaces. Then I prefer to resume with a stationary domain and set the boundary condition to No Slip Wall with Wall Velocity.

Please find...
Forum: CFX February 7, 2013, 08:16
Replies: 15
Views: 1,894
Posted By Daniel C
Thank you ghorrocks. Yes, it is mentioned...

Thank you ghorrocks.

Yes, it is mentioned in the FAQ that I also have to check the physics. It also seems to me, that the biggest source of error is the fluid property model.



I assumed...
Forum: CFX February 5, 2013, 13:36
Replies: 15
Views: 1,894
Posted By Daniel C
Real Gas properties?

Maybe I can't Assume an ideal gas, because the CO2 is in a supercritical state, but at least I should get an finite temperature.
Forum: CFX February 5, 2013, 11:09
Replies: 15
Views: 1,894
Posted By Daniel C
Temperature rises with timestep

Hallo,

a brief introduction to my CFD-Model:

I am investigating an enclosed rotating disc at Re-Numbers above 2E 8. The setup consist of one fluid (CO2) and two solid domains (Rotor,Stator)....
Showing results 1 to 9 of 9

 
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