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Forum: CFX

July 23, 2009, 06:20

Replies: 7

Concentration of CO2 Modelling help

Views: 2,355

Posted By ghorrocks

Now you have explained it better I have a better...

Now you have explained it better I have a better idea of what you are trying to do.

At steady state the inputs equals the outputs. So if 0.01kg/s is coming in from the person it must be going out...

Forum: CFX

July 22, 2009, 18:48

Replies: 7

Concentration of CO2 Modelling help

Views: 2,355

Posted By ghorrocks

Hi, But surely have you some feel for how...

Hi,

But surely have you some feel for how long it will take? All we need is a guess, just to give us a guide as to whether there is a big range in time scales.

If you have no idea about the CO2...

Forum: CFX

July 21, 2009, 18:52

Replies: 7

Concentration of CO2 Modelling help

Views: 2,355

Posted By ghorrocks

Hi, It is not the flow rates which are...

Hi,

It is not the flow rates which are important but the separation of time scales. You have said the fluid turns over in 10 minutes, but how long does the CO2 take to reach equilibrium from the...

Forum: CFX

July 20, 2009, 18:50

Replies: 7

Concentration of CO2 Modelling help

Views: 2,355

Posted By ghorrocks

Hi, Obtaining a converged steady state...

Hi,

Obtaining a converged steady state solution is tricky if the time scales of the device have a wide range. For instance does the fluid turn over in a second or two, but the CO2 concentration...

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