Ostrikov, A. and Ospanov, A. and Vasilenko, V. and Muslimov, N. and Timurbekova, A. and Jumabekova, G. (2019) Melt flow of biopolymer through the cavities of an extruder die: Mathematical modelling. Mathematical Biosciences and Engineering, 16 (№ 4). pp. 28752905.

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Abstract
This is an analytical solution of the twodimensional nonisothermal mathematical model describing the change in the velocity profile of a cylindrical extrusion die. This solution is based on the following assumptions. The twodimensional melt flow is asymmetric. A melt viscosity anomaly may take place. Heat generated by viscous friction is a factor affecting the melt flow. The melt flow moving towards the metering section is in a steady state. Neither mass forces nor inertia forces are present. Velocity gradients along the channel are neglected. The mathematical model was built up from the incompressibility equation, motion equations, energy equation, and the rheological equation. This model depicted a nonisothermal flow of rheological fluid moving through the cylindrical extrusion die. A diagram was drawn. It depicts the melt velocities at a die entrance in different crosssectional views. Computer testing was performed to verify the obtained solutions and compare them with the real extrusion process. Difference between calculated and experimental data was below 14%. Results allow concluding a matching of numerical results with experimental data, and so the possibility of using a builtup model in an extrusion die design for singlescrew extruders.
Item Type:  Article 

Subjects:  Engineering science Engineering science 
Depositing User:  Абдыманап Абубакирович Оспанов 
Date Deposited:  21 Nov 2019 05:16 
Last Modified:  21 Nov 2019 05:16 
URI:  http://repository.kaznau.kz/id/eprint/1150 
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