[RodriguezFatz]

Hi,

I need to get the minimum and maximum pressure value in my domain for each time step. I tryed

prMin
    {
        type swakExpression;
        valueType cellZone;
        zoneName FLUID;
        accumulations (
            average
        );
        expression "min(p)";
        verbose true;
    }
prMax
    {
        type swakExpression;
        valueType cellZone;
        zoneName FLUID;
        accumulations (
            average
        );
        expression "max(p)";
        verbose true;
    }

in my controlDict but I am not sure, if that is the correct way. I get slightly different values in paraFoam, but I am not sure if that is just some interpolation problem.
Can someone confirm the code or tell me how to do it right?
Philipp.

[tomf]

Hi,

I do not think you need to use swak (unless you need additional functionality I am not aware of). The standard functionobject should work as well:

    
minMax     
{
         // Type of functionObject
         type            fieldMinMax;
          // Where to load it from (if not already in solver)
         functionObjectLibs ("libfieldFunctionObjects.so");
          // Function object enabled flag
         enabled         true;
          // Log to output (default: false)
         log             false;
          // Write information to file (default: true)
         write           true;
          // Fields to be monitored - runTime modifiable
         fields
         (
             p
         );
}

Regards,
Tom

[RodriguezFatz]

Great, I am going to try that! Thanks

Edit: Alright, I'm getting the same values. Thank you again!

[gschaider]

Originally Posted by RodriguezFatz

Hi,

I need to get the minimum and maximum pressure value in my domain for each time step. I tryed

prMin
    {
        type swakExpression;
        valueType cellZone;
        zoneName FLUID;
        accumulations (
            average
        );
        expression "min(p)";
        verbose true;
    }
prMax
    {
        type swakExpression;
        valueType cellZone;
        zoneName FLUID;
        accumulations (
            average
        );
        expression "max(p)";
        verbose true;
    }

in my controlDict but I am not sure, if that is the correct way. I get slightly different values in paraFoam, but I am not sure if that is just some interpolation problem.
Can someone confirm the code or tell me how to do it right?
Philipp.

Just do

prMin
    {
        type swakExpression;
        valueType cellZone;
        zoneName FLUID;
        accumulations (
            min
            weightedAverage
            max
        );
        expression "p";
        verbose true;
    }

(weightedAverage is an added bonus)