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Duc_Hoang

error occur executing AcuSolve

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Hi experts,

  • I am using AcuSolve to make a simulation of wind turbine.

The concept is a wind turbine standing on the ground and subject to a wind speed at 5 m/s.

The wind make the rotor rotate around its axis.

  • I used transient simulation with sliding mesh approach (like in tutorial Acu-T 5001) and the mesh motion is rigid-body-dynamic.

But my simulation stopped after 31 time steps while the settings was 100 time steps.

  • Acutails show error as below:

image.png.ec3c9ada214c1c0fecdba475b900515a.png

  • Can you give me any advice about this issue?
  • The acusolve database can be download from this link:

https://drive.google.com/open?id=18Q7m8_dtrlO39iBF1YqfNC8QTS5kd6CB

 

(meshing done by HyperMesh and imported into AcuConsole for setup the problem)

Thank you very much!

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Based on my quick look at the database, you do not have the interface surface attached to the Rotor volume - only that for the Fixed/main volume.  Right-click 'Air-rotor' under Volumes and select Mesh Op. > Find Missing Surfaces.  This will generate the other set of surfaces, attached to the Rotor Volume.  It appears you already have two sets of nodes there, but the surface definition was missing.  This new surface set should have the same treatment as 'interface' > deactivate Simple BC, and activate Interface Surface with 0 for gap and gap_factor.

 

If you know or can estimate the angular velocity, it's simpler to use rotation mesh motion rather than rigid body.  It's difficult to estimate the resistance to rotation due to the gearbox, etc, so the angular velocity / rotation from Rigid Body motion is probably going to be higher than the actual would be.

Livil Lyle and Duc_Hoang like this

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11 hours ago, acupro said:

Based on my quick look at the database, you do not have the interface surface attached to the Rotor volume - only that for the Fixed/main volume.  Right-click 'Air-rotor' under Volumes and select Mesh Op. > Find Missing Surfaces.  This will generate the other set of surfaces, attached to the Rotor Volume.  It appears you already have two sets of nodes there, but the surface definition was missing.  This new surface set should have the same treatment as 'interface' > deactivate Simple BC, and activate Interface Surface with 0 for gap and gap_factor.

 

If you know or can estimate the angular velocity, it's simpler to use rotation mesh motion rather than rigid body.  It's difficult to estimate the resistance to rotation due to the gearbox, etc, so the angular velocity / rotation from Rigid Body motion is probably going to be higher than the actual would be.

Hi Acupro,

thanks for your answer.

it's true that there is a missing surface in my database. i have solved the problem with your help.

Thanks again. :D

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