Abstract
Based on the state of the problem related to highquality and reliable insulation coating of high-voltage cables, the problems of mathematical modeling of pro-cesses in the loading zone and the delay of the polymer mixture in a single-screw extruder are formulated, which is crucial in terms of providing a high-quality insulation coating. An iterative numerical-analytical method for solving the corresponding nonlinear boundary value problems is proposed, based on the use of finite integral transformations in the spatial and temporal domains and their implementation.
Highlights
Due to the high productivity of the extruders, their substantial value, and the high cost of polymeric materials, experimental studies on equipment upgrades and technological regimes lead to costly materials and time costs
The vast majority of theoretical work on the description of processes of heat transfer is based on the classical Navier - Stokes equations [1,2,3], at the same time, existing approaches to the modification of the processes of flow, heat exchange and phase transformation of polymers in channels of extrusion equipment [4] do not provide a qualitative and quantitative analysis of the processes, since the vast majority of them are formulated either in onedimensional formulation [5,6,7,8,9,10,11] or formulated in threedimensional formulation, but the corresponding boundaryvalue problems are not given or solved communications link to knowstandard '' packages numerical solution, which by their nature are not designed to solve nonlinear models
A number of problems have not been solved in the theory of plastic extrusion
Summary
Due to the high productivity of the extruders, their substantial value, and the high cost of polymeric materials, experimental studies on equipment upgrades and technological regimes lead to costly materials and time costs. This leads to the development of theoretical foundations of the processes under study. V. Bolhovitin, Lecturer, Department of Computer Systems and Networks, Institute of Computer Technology of the University, Ukraine A. Pavlov., Senior Lecturer, Department of Computer Science, National Technical University, Ukraine. Due to the surface effect, the distribution of internal heat sources is significantly heterogeneous and depends on the electrophysical properties of the load, which change during heating.
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