[seju]

Dear foamer
I want use this code for calculate droplet velocity but I dont kwon any thing.I dont know I must how use it?
its:

downAverage
{
type swakExpression;
valueType internalField;
variables (
"downDirection=vector(0,-1,0);"//select the downwards direction
"thres=0.5;"//which cells to keep
"liquidVol=sum(alpha1>thres ? vol() : 0);" //calculates the volume of the drop
"downVel=alpha1>thres ? (U & downDirection) : 0;" //a & b:inner vector product. Keep the y component of U. );
expression "downVel*vol()/liquidVol" //vol():vol of the cell
accumulations ( sum ); verbose true;
}


please help me. I dont know any thing about use swak4Foam,I just found this code in wiki.
http://www.openfoamwiki.net/index.ph...ropletVelocity

[gschaider]

Originally Posted by seju

Dear foamer
I want use this code for calculate droplet velocity but I dont kwon any thing.I dont know I must how use it?
its:

downAverage
{
type swakExpression;
valueType internalField;
variables (
"downDirection=vector(0,-1,0);"//select the downwards direction
"thres=0.5;"//which cells to keep
"liquidVol=sum(alpha1>thres ? vol() : 0);" //calculates the volume of the drop
"downVel=alpha1>thres ? (U & downDirection) : 0;" //a & b:inner vector product. Keep the y component of U. );
expression "downVel*vol()/liquidVol" //vol():vol of the cell
accumulations ( sum ); verbose true;
}


please help me. I dont know any thing about use swak4Foam,I just found this code in wiki.
http://www.openfoamwiki.net/index.ph...ropletVelocity

The way you ask that question there is no way to answer it

a) be more specific about "don't do anything". Crashes? PRints nothing? Only prints zeros?
b) which version of OF and swak are you using

[seju]

Originally Posted by gschaider

The way you ask that question there is no way to answer it

a) be more specific about "don't do anything". Crashes? PRints nothing? Only prints zeros?
b) which version of OF and swak are you using

I want calculate the velocity of droplet .
my openFoam is 2.2.1
my swak4Foam is 0.2.4

[gschaider]

Originally Posted by seju

I want calculate the velocity of droplet .

That was quite obvious. What is not obvious is what problem you have. See a) in my last posting

Originally Posted by seju

my openFoam is 2.2.1
my swak4Foam is 0.2.4

OK. These are quite up-to-date versions

[seju]

Originally Posted by gschaider

That was quite obvious. What is not obvious is what problem you have. See a) in my last posting

OK. These are quite up-to-date versions

my problem its " I dont know how use this code??" I didnt work by swak4Foam before

[gschaider]

Originally Posted by seju

my problem its " I dont know how use this code??" I didnt work by swak4Foam before

Well. The title "Problem in swak4Foam" suggested that the problem is in swak ...

Anyway: which documentation/presentation (there is a number of that linked from the swak-page on the Wiki) have you already read?

[seju]

Originally Posted by gschaider

Well. The title "Problem in swak4Foam" suggested that the problem is in swak ...

Anyway: which documentation/presentation (there is a number of that linked from the swak-page on the Wiki) have you already read?

I dont have any documentation/presentation. I so sorry
Im a new user in openFoam
I want use interFoam and simulation droplet or bubble.
I simulated it but i dont know how I calculate velocity bubble or droplet.

[seju]

Originally Posted by seju

I dont have any documentation/presentation. I so sorry
Im a new user in openFoam
I want use interFoam and simulation droplet or bubble.
I simulated it but i dont know how I calculate velocity bubble or droplet.

I think Im understanding. I addition this code to controlDict

[gschaider]

Originally Posted by seju

I dont have any documentation/presentation. I so sorry
Im a new user in openFoam
I want use interFoam and simulation droplet or bubble.
I simulated it but i dont know how I calculate velocity bubble or droplet.

Please have a look at http://openfoamwiki.net/index.php/Contrib/swak4Foam (especially "Further Information"). Asking vague question without even basic research basically says "my time is so much more valuable than yours" and this does not inspire goodwill in others