Without knowing the actual error, the issue is probably related to this. There was also collapse of the geometry all around so overall, it's under resolved and the AMI is too close. You can fix this by moving your AMI away from the blade tip. Your small cells at the tip of your blades are a problem for Courant number since now you have small cells at the fastest moving part of your mesh. I'd fit at least 3 cells in there and that is a level 8 or 9 just there. Numerous OpenFOAM utilities are supported by. You have a space of about 0.0093m from your blade tip to your ami. runGui visualises your simulation monitoring, for example residuals, probes, time steps, Courant number etc. One of your groups of triangular faces around trailing edge of the blade is 0.0221 m (should be around a level 6 but it's set to level 2 or 3) but you'd probably want to go to a level 8 for good measure. Your background mesh is 1m and your level on the rotor is 0.25m(level 2) and AMI is around 0.125m (level 3). The resolution of the mesh is not very good. See below the link to a OneDrive with the case and blender files for the turbine: Additionally, a (user editable) database is used to extract data for standard non-solved for variables like Courant number and. Courant Number mean: 6.92740210013e-09 max: 4.85034908134e-06 deltaT 1.199999616e-07 Time 1.2e-07 diagonal: Solving for rho, Initial residual 0, Final residual 0, No Iterations 0 PIMPLE: iteration 1 DILUPBiCG: Solving for Ux, Initial residual 4.38718521517e-07, Final residual 4. The blockMesh is far less refined than the snappyHexMesh, could this be causing a problem as I've heard that meshes can cause problems? I'm pretty sure the centre of the ami is correctly centred in the dynamicDict as for the small simulation time it can run it appears to rotate properly. The simulation will end very early (in the order of milli-seconds) and unexpectedly because it doesn't even say it's ended when its stop running. patches in Paraview, or if the actual calculated flow is affected. This is far smaller than specified but it always does it no matter what's specified. The Courant number, or the Courant Friedrich Levy criterion, is important to. When turned on, delta T increases with order of around 10^(-4 to -6). This is with the adjustTimeStep function turned off. Courant Number mean: 0 max: 0 DILUPBiCG: Solving for Ux, Initial residual 1, Final residual 3.14067e-11, No Iterations 18 DILUPBiCG: Solving for Uy, Initial residual 0, Final residual 0. The courant number is limited at 1 in the control dict but increases with each iteration, getting in the order of 10^(36) quickly.
When checkMesh is ran it has one faliure but I don't know why. The controlDict dictionary sets input parameters essential for the creation of the database. The database controls I/O and, since output of data is usually requested at intervals of time during the run, time is an inextricable part of the database. I'm trying to run a simulation of a wind turbine in pimpeFOAM with the following commands in this order surfaceFeatureExtract, blockMesh, snappyHexMesh -overwrite, renumberMesh -overwrite, createPatch -overwrite, checkMesh, pimpleFOAM. The OpenFOAM solvers begin all runs by setting up a database.
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