Abstract
The discrete method of modeling the fluid passage through the textile material was developed, which makes it possible to define the boundary of the wetted section of material both at the surface and in the depth for materials with an arbitrary number of layers. The essence of the proposed method lies in modeling the material with a system of cells and passages for spreading the fluid with the assigned characteristics. Preliminary studies substantiated the relevance of this method, which was applied for studying a specific material. Such studies are necessary for the correct prediction of the processes that occur in therapeutic textile materials. They also create prerequisites for designing materials with the required properties. We revealed the effect of additional concentrations inside the material, the consideration of which makes it possible to correctly predict the dynamics of fluid passage through textile material. An analysis of functional dependences of the boundary of the wetted zone for two–layered fabrics, which are used for therapeutic purposes, allowed us to recommend it in the form of the sum of exponential function and exponential function with the maximum. Each two-layered material in this case is characterized by four constants in the course of the fluid passage. The actual characteristics of two-layer textile material were defined. They are used for determining the fluid concentration in the lower layer of material. This makes it possible to predict the period of using material as a therapeutic textile system. The use of the proposed method for multi–layer materials makes it possible to select the most rational characteristics of separate components for a specific case
Highlights
In some cases [1, 2], these characteristics become the most important. Such cases include the use of materials as protective barriers [3], in which the passage of fluid should be decelerated by means of selecting the properties of separate layers
An additional advantage of the algorithm is the possibility to determine the geometry of the wetted boundary in the material, which was quite difficult to do in other models
Coordinate X will be plotted horizontally, it will determine the size of the wetted zone, coordinate Z will be directed from the surface to the depth of material, it varies in the range from zero to the magnitude of material thickness
Summary
There has been an increasingly widely spread use of multi-layered textile materials throughout the world. There is a contradiction between modern humanistic and medical demands for the creation of multi-layered textile materials and disadvantages in identifying effects that appear in them with the passage of fluid This contradiction makes the research in this direction relevant. Such cases include the use of materials as protective barriers [3], in which the passage of fluid should be decelerated by means of selecting the properties of separate layers They can be used as therapeutic textile means [4]. An additional advantage of the algorithm is the possibility to determine the geometry of the wetted boundary in the material, which was quite difficult to do in other models These results can be very useful when designing technological processes of dyeing, cleaning or other processes of chemical treatment.
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