Ebrahim Jahanshahi Javaran, Saeed Jafari, Akbar Kouhestani

Mechanical Engineering Department
Shahid Bahonar University of Kerman, Iran



The present study deals with the calculation of the rheological properties of suspensions. By far, the most widely used flow to probe the rheology and structure of suspensions is shear flow using two parallel oppositely moving walls. Using walls to introduce shear into a domain causes wall effects in the calculation of rheological properties of suspensions. Employing Lees-Edwards boundary conditions as an alternative method, removes these effects. The effect of violation the Galilean invariant on the rheological properties of suspensions is important to this area. We search for a method to remove non-Galilean effects. So, in the present study, smoothed profile method (SPM) is used as the suspension method and it is found that this method conserves completely Galilean invariance. Furthermore, relative effective viscosity of the suspension at various particle volume fractions is analyzed. In addition the effect of particle-based Reynolds number is investigated on the rheologic!
al properties of the suspension. The results are compared with those found in the literature and good agreement is seen.