Cdrag multiple tracking
 

Hi all,
I'm performing some aerodynamic calculations and it will be very useful to me to understand if by using the forceCoeffs function there is the possibility to track the drag coefficients of more than one patch at the same time (I mean during the same run). To be as much clear as I can, what I want to do is not to evaluate the Cdrag of an object composed by different patches, but namely the drag contribution of every single patch.

Thank you in advance

V.

Any replies?

I'd like to know the answers also.

Yes, it is mentioned in different posts. Search through the forum, I'm not sure I didn't use it for different patches, but I believe you just repeat the whole section where you call for force output, but you define multiple sections with different directory names. Something like:

name1
{
...
}

name2
{
...
}

I'm not sure, search, read, verify ;)

Aloha,
K

Yes, it's like Paka said. I've verified it on my own and it works: you just have to declare some different forceCoeffs-type functions into the controlDict (the name is not important, what is important is do declare them properly), each one referred to the patch of interest. By doing so, during the run time the code will store the force coefficients in different folders, named as the different functions are.

Regards

V.