Development of a new method for solving problems of compressing various liquids with the manifestation of the “microcrack-liquid” effect

The object of the study is the peculiarities of the movement of viscous and anomalous liquids in plane-parallel and plane-radial microcracks. The problem of hydrodynamic features of fluid motion in the considered objects – channels was studied. Currently, the mechanical properties of liquids are being studied in pipes of various sizes. There are studies that claim that in small pipes the resistance to fluid movement increases compared to calculation formulas, and this phenomenon is explained by various qualitative factors. To study this mechanical phenomenon, a device equipped with plane-parallel and plane-radial microcracks was developed. Numerous experiments carried out in microcracks have shown that for each liquid there is a critical crack opening and the following pattern has been discovered. The essence of the obtained results is that during the movement (or static state) of a fluid in a microcrack (or an equivalent porous medium) with an opening less than critical, a viscous one-parameter fluid (water, viscous oil, etc.) becomes two-parameter, and two-parameter (resinous oils, polymers) solutions, etc.) increase their rheological parameters. In this case, additional resistance arises against the movement of the fluid, which was named as a new hydrodynamic effect in the “microcrack-liquid” system. A new phenomenon has been revealed, in which the motion of viscous and anomalous fluids in micron-sized fractures is described by other rheological curves. This allowed to take this hydrodynamic fact into account when solving the compression problem. In this regard, problems are solved taking into account the “microcrack-liquid” effect. The results of the research require taking into consideration the crack effect in estimating the parameters of the technological processes system and technical devices “microcrack-fluid”. Machines and mechanisms must additionally have nodes that would prevent this effect. This is of scientific and practical importance for various fields of the industry, machine manufacturing, instrument manufacturing, chemical technology and medicine