The Analysis of Theoretical Approaches to the Study of Aerodisperse Flows of the Pneumatic Transport Systems
Pneumatic transportation of hard disperse materials is widely used in many fields of industry connected with production, handling and storage of various kinds of bulk cargo. Pneumatic transport systems are simple in construction, compact and protect cargoes from weather impact and environment from dustiness. However, the further expansion of the pneumatic transport application sphere is often restrained by the lack of scientifically grounded and reliable engineering methods of the aerodynamic (hydraulic) calculation of pneumatic transport systems. The analysis of the description and analysis technique of aerodisperse flows has shown that lack of sufficiently valid physical models of air mixture and hard disperse materials (aeromixtures) pipe motion led to the fact that in the practice of designing and creation of pneumatic transport systems a lot of various and empirical calculation formula are used. Their common drawback is limited experimental conditions on the basis of which they are obtained and sometimes an unacceptably low degree of accuracy that causes certain difficulties in the choice of calculation formula for this designing object. One of the ways to solve problems related to the development of valid aerodynamic calculation techniques of pneumatic transport systems is to use the experience of solving such problems in the related field - hydrotransport of bulk solids but taking into account peculiarities of the aerodisperse flow. It will allow to create a scientific basis for the development of generalized techniques for the aerodynamic calculation of pneumatic transport pipelines and feeders.