Numerical and Experimental Analysis of Torque Demand on a Bilobe Rotor in a Two Phase Flow Field
Author(s):
Chetan C.J, prashas.journals@gmail.com
Keywords:
Multiphase Flow, Viscous drag, Torque, Slurry.
Abstract
The work is an effort to study the fluid dynamic behavior of two phase flow comprising of solid and liquid with nearly equal density in a specialized geometrical case that has an industrial significance in the area of processing of polymers in applications related to food processing, pharmaceuticals, paints etc. In this work, crystalline silica with a mean diameter of 50 microns is considered as the dispersed medium in liquids of high viscosity, honey and glycerin. In the study carried out, the two phase components are premixed homogeneously at the initial state. The study made uses flow in a cylinder that has an axially driven bi-lobe rotor, identical to a typical blender used in polymer industry for mixing or kneading used in rendering the multi-component mixture to a homogeneous condition. In the CFD analysis made, a viscous, incompressible, isothermal flow is considered with an assumption that the components do not undergo any physical change and the solids are rigid and are mixed in fully wetted conditions. The study is carried out for different mixing fractions and at different speeds. An industry standard CFD code that uses 3D-RANS approach is used for the study. As the outcome of the study the torque demand by the bi-lobe rotor for different mixture fractions are estimated that has shown a behavioral consistency to the expected physical phenomena occurring in the domain considered. The results of the computation are validated using experiments. The outcome of the study is expected to of significance for design of the industrial polymer mixers.
Article Details
Unique Paper ID: 164924

Publication Volume & Issue: Volume 10, Issue 4

Page(s): 615 - 619
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