[brunoc]

Originally Posted by Anna Tian

I ask for the reference because I use CFX-post to compute volume and I need to refer it and put the volume calculating formula on my thesis. Where could I find it?

And what is the formula to compute the surface averaged heat flux?

Originally Posted by Anna Tian

Where could I find the documentation?

You're writing a thesis involving numerical simulation. You're already at the post-processing step. And you don't know about the software documentation? How did you pick the models you used?

You can find the documentation by opening the CFX-Launcher and going to 'Help > CFX > Index'. Another option is through the Start Menu (Windows), on 'Start > ANSYS XX.X > Help > ANSYS XX.X Help', where XX.X is the ANSYS version you have installed.

[Anna Tian]

Originally Posted by RicochetJ

In the Ansys theory or solver modelling guide !

I spent quite some time to look for them but didn't find out. Are you sure they are there?

[JuPa]

Originally Posted by Anna Tian

I spent quite some time to look for them but didn't find out. Are you sure they are there?

There are a few other guides. Check them all. I have personally seen the definitions in one of the guides.

Anyway I agree with Bruno's post above. By now you should be a little familiar with the guides especially as they contain the theory for most of the questions that you ask here. :-)

[Anna Tian]

Originally Posted by RicochetJ

There are a few other guides. Check them all. I have personally seen the definitions in one of the guides.

Anyway I agree with Bruno's post above. By now you should be a little familiar with the guides especially as they contain the theory for most of the questions that you ask here. :-)

The modelings are well discussed in the guides. But I didn't find the formula telling how CFX does the averaging.

[Anna Tian]

Originally Posted by brunoc

You're writing a thesis involving numerical simulation. You're already at the post-processing step. And you don't know about the software documentation? How did you pick the models you used?

You can find the documentation by opening the CFX-Launcher and going to 'Help > CFX > Index'. Another option is through the Start Menu (Windows), on 'Start > ANSYS XX.X > Help > ANSYS XX.X Help', where XX.X is the ANSYS version you have installed.

The modelings are well discussed in the guides. But I didn't find the formula telling how CFX does the averaging.

[oj.bulmer]

These links do not work now. Where could I find the documentation?
And what is the formula to compute the surface averaged heat flux?

Have a look in the documentation here:

CFX:
// Reference Guide // 14. Functions in ANSYS CFX // 14.5. Quantitative Function List // 14.5.16. massFlowAve

FLUENT:
// Theory Guide :: 0 // 22. Reporting Alphanumeric Data // 22.3. Surface Integration // 22.3.1. Computing Surface Integrals

Understand that the definitions like "area/flow averaged quantity" are generic and hence, in those cases, the documentation for FLUENT is applicable to CFX.

By the way, how does CFX calculate the volume of the fluid domain? Just sum up all the cells size in the fluid domain?

Yes, see section 14.5.29.2.
// Reference Guide // 14. Functions in ANSYS CFX // 14.5. Quantitative Function List // 14.5.29. volume

The links are for ANSYS 14.5 products.

OJ