The settlement drag coefficient of non-spherical particles (SDCNPs) is a crucial parameter in the field petroleum engineering. Accurately predicting SDCNPs fluid essential to selection and design proppant hydraulic fracturing scheme. Although many models for anticipating have been proposed, none them can be adopted non-Newtonian (NNF) Newtonian (NF). In investigation, NF NNF are studied experim...

the presence of particles in liquid-solid fluidized beds enhances the bed heat transfer, because the movement of the particles leads to an increased turbulence in the system. moreover, the violent movement of the particles has a positive effect on fouling of the heat transfer surface. the aim of this investigation was to perform systematic measurements of bed voidage and heat transfer coefficie...

Mg(OEt)2 with spherical morphology is one of the most important precursors for the preparation of industrial Ziegler-Natta catalysts. In the present article, morphology evolution of Mg(OEt)2 particles is studied in the course of the synthesis. The morphology of Mg(OEt)2 particles is observed throughout the process by SEM. The results show that Mg(OEt)2 particles are formed through i) seed gener...

Sedimentation analysis of nanoparticle (ZrO(2) and SiO(2)) suspensions of different particle sizes in various solvents as nanoparticle model systems was carried out using interference optics in the analytical ultracentrifuge. The particles differed in their morphology: SiO(2) particles were spherical, whereas ZrO(2) particles were in one case spherical and in the second case non-spherical and s...

Objective of this study is to investigate the effect secondary motion particles in multiphase gas-solid flows parametrically and test relative impacts particle shape orientation information on distribution. For that purpose, predictive accuracies simplified drag coefficient models are assessed for conditions relevant a wood recovery plant operating at dilute flow regime. After demonstrating str...