I would like to simulate the clogging of nozzle from the deposition of solid particle, but it seems to be that Comsol consider particle as a point (dimesionless)

Therefore, when the particle deposit, it will not accumulate in order to make the mesh change (because the particle is dimensionless).

i attach the image to describe my desired model 

So, What should I do ?

Thank you in advance

Best Regards,

Yannapol S.