화학공학소재연구정보센터
Chemical Engineering Communications, Vol.139, 223-231, 1995
Evaluation of Distributive Mixing Efficiency in Mixing Equipment
A framework was developed to evaluate the distributive mixing efficiency during processing in a mixer. The dynamics of distributive mixing was studied numerically by means of tracking the evolution of particles originally gathered as clusters. The goodness of mixing was characterized in terms of length stretch, pairwise correlation function and volume fraction of islands. The length stretch reflects the capability of the mixer to spread particles away from their neighbors initially present in the same cluster. The pairwise correlation function characterizes the global distribution of particles in the mixing region. The volume fraction of islands quantifies the regions void of minor component and provides a better local analysis of the mixing. This framework was applied to study distributive mixing in the C-shaped chamber of an intermeshing counter-rotating twin screw extruder.