[cloudwsx]

Hi all,

I want to simulate a simple case with a cylinder, which using a dynamic Mesh. I want the cylinder can rotate from a point.
With rotation speed of 0 rad/s. The simulation went well.
But when a positive rotation speed is added, the calcuation paused and terminated after serveal calcualtion step.
In paraview, results of the steps which already perfromed looks fine.
So I have no clue how to locate the reason of terminated of calucation.
Can some one help me to find out the reasons? Many thanks!


Following is the latest sentences from log file.
Seems there is some non-zero values there but I do not how to find the reason.

PIMPLE: Iteration 1
AMI: Creating addressing and weights between 7168 source faces and 7168 target faces
AMI: Patch source sum(weights) min/max/average = 0.503673, 1.39448, 0.830561
AMI: Patch target sum(weights) min/max/average = 0, 1.38001, 0.776023
GAMG: Solving for pcorr, Initial residual = 1, Final residual = 0.0189694, No Iterations 17
GAMG: Solving for pcorr, Initial residual = 0.502012, Final residual = 0.0103886, No Iterations 5
time step continuity errors : sum local = 7.28406e-11, global = -4.74792e-12, cumulative = -1.1844e-11
smoothSolver: Solving for Uy, Initial residual = 0.00250991, Final residual = 3.94283e-05, No Iterations 1
smoothSolver: Solving for Uz, Initial residual = 0.0020454, Final residual = 3.50647e-05, No Iterations 1
--------------------------------------------------------------------------
Primary job terminated normally, but 1 process returned
a non-zero exit code. Per user-direction, the job has been aborted.
--------------------------------------------------------------------------
--------------------------------------------------------------------------
mpirun detected that one or more processes exited with non-zero status, thus causing
the job to be terminated. The first process to do so was:

Process name: [[37505,1],0]
Exit code: 142
--------------------------------------------------------------------------

[tomf]

Hi,

The bold line below gives you the reason:

PIMPLE: Iteration 1
AMI: Creating addressing and weights between 7168 source faces and 7168 target faces
AMI: Patch source sum(weights) min/max/average = 0.503673, 1.39448, 0.830561
AMI: Patch target sum(weights) min/max/average = 0, 1.38001, 0.776023
GAMG: Solving for pcorr, Initial residual = 1, Final residual = 0.0189694, No Iterations 17
GAMG: Solving for pcorr, Initial residual = 0.502012, Final residual = 0.0103886, No Iterations 5
time step continuity errors : sum local = 7.28406e-11, global = -4.74792e-12, cumulative = -1.1844e-11
smoothSolver: Solving for Uy, Initial residual = 0.00250991, Final residual = 3.94283e-05, No Iterations 1
smoothSolver: Solving for Uz, Initial residual = 0.0020454, Final residual = 3.50647e-05, No Iterations 1

For the AMI patch there is a location where the Patch target weight becomes 0, meaning that there is no interpolation possible. It may happen if the origin of your rotation is not exactly in the center of your cylinder, or maybe for some other issues on the mesh when it is moving.

You can try and test this with moveDynamicMesh -checkAMI.

Hope this helps.

[cloudwsx]

Hi, tomf, Thanks!
You are right. It is becasue of the mesh. Seems the snap in snappyHexMesh does not successfully applied. Now it works.