Abstract
Results of pilot studies related to hydraulic resistance of wire woven grids with cells of micron sizes in laminar mode of a filtration have been presented. For assessment of grids hydraulic resistance the permeability coefficient value has been used. To overcome the effect of a large-scale factor on conducted researches results the dimensionless size of this parameter in the form of permeability coefficient relation to a square of the grid cell size is entered. The researches have been conducted on free-flow hydraulic installation by specially developed technique providing high precision determination of this parameter. Influence like wires interlacing at a size of dimensionless coefficient of permeability is established. Nature of influence like wires interlacing at a size of this parameter is confirmed with results of wire grids internal structure analysis. On the basis of obtained data the choice technique like grid has been developed for production of a filtering partition with optimum characteristics at the set size of filtering nominal subtlety. On the basis of porous body channel model the assessment of hydraulic resistance coefficient value of wire grids with various type of wires interlacing has been carried out. Dependence of this parameter on wires interlacing type has been established. Groundlessness of interstice’s tortuosity coefficient use at assessment of grids hydraulic resistance has been shown.
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