Dear Prof. Rob,nThank you for your response, I did not find videos of nanofluid flow as a multiphase in Help. You can send me a link please. I solved my case study as a single-phase approach but i found a little variation in results Nusselt number with varying the nanoparticles concentrations. Also, i read a lot of paper recommend to treat with nanofluid as a two-phase flow to be more realistic . So i made a setup on mixture model. I will be so grateful if i found an video or file.nRegards,n