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Only Zeros In icoUncoupledKinematicParcelFoam

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Old   May 20, 2020, 04:00
Default Only Zeros In icoUncoupledKinematicParcelFoam
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Simon
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Hello guys.


sorry if you red this in another thread before. Since its not a good style to ask questions in a already existing thread I'm opening a new one.

I have a roblem with the openfoam icoUncoupledKinematicParcelFoam-Solver.

I took the hopper-tutorial from that solver. If I run it, it gives me normal results.

Now I am trying to change the geometry to a simple cube just to make the first step to adapt it to my special case. But the solver is showing in each iteration 0 partikles. Does someone know why it is like that?

Here is the Output after each iteration:
Code:
Time = 0.0005

Evolving kinematicCloud

Solving 3-D cloud kinematicCloud
Cloud: kinematicCloud
    Current number of parcels       = 0
    Current mass in system          = 0
    Linear momentum                 = (0 0 0)
   |Linear momentum|                = 0
    Linear kinetic energy           = 0
    model1:
        number of parcels added     = 0
        mass introduced             = 0
    Rotational kinetic energy       = 0
In the folder: [lastTimestep]/uniform/lagrangian/kinematicCloud are two files after the simulation:

cloudProperties:
Code:
processor0
 {
    particleCount   0;
 }
and kinematicCloudOutputProperties
Code:
injectionModel
{
    model1
    {
        massInjected    0;
        nInjections     245;
        parcelsAddedTotal 0;
        timeStep0       0;
    }
 }
So how can there be 245 Injections when the number of particles is zero?

I am not showing the kinematicCloudPropertiesbecause its producing the same error if I change it.


Thank you for any suggestions
Simon

Last edited by SimonStar; May 20, 2020 at 06:59.
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Old   May 25, 2020, 07:58
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Hello everyone,


I think I got a solution to my problem. Its a mistake thats costing time if you're a beginner. I hpe to save others time by writing this.

The problem was that I changed the geometry to a smaller one without changing the particle injection positions. The ressult was that all particles were injected into nowhere...


I'm still interessted in going further:

1. What is the best way to inject the particles instead of at the same time over a time period?

2. Can I also use the cinematicCloudPositions-File for this or do I have to go a completely diffrent way?


Thank you
Simon
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opefoam7, problem, solver error, uncoupledkinematicparcel

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