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March 2017 (published: 30.03.2017)
Home > Issue > Rheo- and hydrodynamics of water-grain suspension. Scientifical rationale of research method choice and pilot plant construction
Rheo- and hydrodynamics of water-grain suspension. Scientifical rationale of research method choice and pilot plant construction
Alexander G. Novoselov, Gulyaeva Yu. N. , Malakhov Yu.L., Chebotar A.V.
The article deals with the task of flow of water-grain suspension through pipelines of alcohol and brewing industries. Grease flow curve method which asoociates shear stress on the wall of the pipeline with the average flow speed is presented. Interrelation of the basic equation of uniform motion for viscous fluid τ = ρgiR with grease curve equation Pʼ= KʹVnʹ is shown. Detailed review of a pilot plant that was created for hydrodynamic investigation of water-grain suspension flow is provided. In order to determine working ability of pilot plant the preliminary test with water are conducted. The method of testing is given and preliminary testing results are provided. Mathematical and graphical relationships for the characteristics of pipeline network which determine correlation between water pressure and water flow taking into account its individual construction peculiarities are obtained. For the first time relationship between pipeline network characteristics and temperature of fluid flowing through the pipeline network is provided. The values of friction coefficient along the length of pipeline λ are determined. Graphical relationship between friction coefficient along the length of pipeline λ and Reynolds number is shown. The pilot plant presented is shown to be of use in researches of water-grain suspension flow investigations along the similar lines.
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Keywords: hydrodynamics; water-grain suspension; hydraulic resistance; pipeline; friction coefficient; Reynolds number.
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