Mathematics – Logic
Scientific paper
Jul 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1027..442y&link_type=abstract
THE XV INTERNATIONAL CONGRESS ON RHEOLOGY: The Society of Rheology 80th Annual Meeting. AIP Conference Proceedings, Volume 1027
Mathematics
Logic
Non-Newtonian Fluid Flows, Viscoplasticity, Yield Stress, Numerical Approximation And Analysis, Computer Modeling And Simulation
Scientific paper
Methods to visualize and analyze the mixing process happening in the planetary kneading mixers, which are used to mix Non-Newtonian and viscoplastic fluid, are proposed. These methods include developing three-dimensional model of the stirring blades, establishing the physical and mathematical models of the flow field in the mixing tank of the planetary kneading mixers, determining the boundary conditions of numerical simulation be virtue of rheological theory and rules, and deeply investigating the characteristics of velocity field and flow pattern of the mixing field numerically simulated by using CFD software. On the other hand, some mixing efficiency evaluating indexes for this type of mixers and their calculating methods are proposed. Based on above mentioned methods, the relationship of the geometrical parameters of stirring blades and the mixing efficiency of the planetary kneading mixers was investigated. The investigating results illustrate that preferable mixing efficiency can be achieved when the value of the helix angle, mounting central distance and mounting clearance of the stirring blades are chosen properly.
Hu Youmin
Liu Shiyuan
Yi Pengxing
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