Author(s)

Ibrohimjon Tursunov¹, Nodira Rajapova¹, Olimjon Sarimsakov¹, Botirjon Mardonov²

¹Department of Technology of Primary Processing of Natural Fibers, Namangan Institute of Engineering and Technology, Namangan, Uzbekistan.
²Department of Higher Mathematics, Tashkent University of Information Technologies, Tashkent, Uzbekistan.

The article considers the movement of a mixture of air and raw cotton through a pipeline with a variable cross-section as a multi-speed heterogeneous medium. The regularities of the movement of components inside the pipeline, the equation of change in the porosity of cotton, air pressure and component velocities in time and along the transportation line are obtained. It was found that in the initial 20 - 25 m part of the pneumatic transport pipe there is a sharp decrease in pressure and air flow velocity, while the speed of cotton increases rapidly due to which there is a strong deformation of cotton stretching under the influence of aerodynamic force, which occurs due to the difference in the velocities of the components of the mixture, as a result of which the cotton loosens, and its porosity increases intensively.

Air Pressure, Fiber, Pipeline, Porosity, Pneumatic Transportation, Raw Cotton, The Mixture

Tursunov, I. , Rajapova, N. , Sarimsakov, O. and Mardonov, B. (2019) The Movement of a Mixture of Cotton with an Air Stream during Pneumatic Transport by Pipeline of Variable Cross Section. Engineering, 11, 531-540. doi: 10.4236/eng.2019.118037.