Reply To: When CSF is introduced using DEM-SPH, particles are popped.

[Lucas Bertollo Baggio]

Hello Hiroki,

What is the size ratio between DEM and SPH? Try adding complexity little by little. Start with SPH-only and see if it is stable. 

• If you are simulating WCSPH, check density clip.
• If you are simulating IISPH, check pressure convergence.
• Also check geometry triangles, if skewed. Inappropriate triangle distribution or size would led to this problems.

Check DEM-only too. If the Young Modulus is too low it could be a problem.

 

Best regards,

Lucas