Surya Deb
Ansys Employee
Hello, nDo you have gravity turned on or expect any kind of settling behavior with increased particle size?nAlso is there a noticeable change in the response time or Stokes number of the particles with a change in diameter?nDo you have Turbulent Dispersion/Random Walk turned on? Check if the increase in size leads to increased interaction with vortices or generation of additional turbulence.nWhere do the majority of particle tracks terminate? Maybe you can check the flow features in and around that region to identify the cause.nAlso check if the volume fraction of particles in cells get affected due to increased diameter. What is the max particle Volume fraction in the domain?nRegards,nSuryan