Please use this identifier to cite or link to this item: http://localhost:8081/xmlui/handle/123456789/3600
Title: THE MECHANICS OF SLURRY TRANSPORT IN PIPELINE
Authors: Sari, Dwi Asika
Keywords: WATER RESOURCES DEVELOPMENT AND MANAGEMENT;SLURRY TRANSPORT PIPELINE;SLURRY TRANSPORT;TURBULENCE ENERGY
Issue Date: 2009
Abstract: The transport of slurries by pipelines is widespread in the mineral, chemical, civil, food, water and other industries. Slurry is essentially a mixture of solids and liquids. The mechanics of slurry transportation. in pipeline depends on many factors such as size and distribution of particles, concentration of solids in the liquid phase, size of conduit, temperature, density of liquid and solid particles, viscosity of liquid and solid particles. Some of the most important design parameter for slurry transport pipelines are pr essure drop and solid concentration profile. Pressure drop is evaluated by the designer for designing a pipeline slurry transportation system, and is the parameter, which dictates the selection of pump capacity. Concentration distribution is used to determine the parameters of direct importance (mixture and solid flow rates) and the secondary effects such as wall abrasion and particle degradation. Many researchers have proposed model for the prediction of pressure drop and solid concentration profiles. The aim of this study was to observe the effect of particle size, velocity of flow and concentration of slurry on pressure drop and for solid concentration profile in a pipeline. Also to propose new relationships for pressure drop and solid concentration profile with relatively known parameters. The available data of slurry transport has been analyzed and concluded that the particle size, flow velocity and overall concentration of slurry affect the pressure drop and the degree of asymmetry in the concentration profiles. Pressure drop increases with increase in concentration for constant flow velocity. The rate of increase in pressure with concentration is small at low velocity but increases rapidly at higher velocities. The finer particle size has less pressure drop at lower flow velocities and has more pressure drop at higher flow velocities than coarser particles. Asymmetry increases with increase in iii particle size and decrease in flow velocity, be cause with, decrease in flow velocity there will be decrease in turbulence energy which is responsible for solid suspension. The increasing concentration reduces the asymmetry because of enhanced interference effect between solid particles for a given velocity. The pressure drop and solid concentration profile mentioned in above paragraph have been evolved with two new equations. These equations are checked with observed data. The comparison between observed and calculated pressure drop show that the prediction by the proposed equation is satisfactory. Most of the comparison between observed and calculated solid concentration profile show good agreement.
URI: http://hdl.handle.net/123456789/3600
Other Identifiers: M.Tech
Research Supervisor/ Guide: Ahmad, Z.
Kansal, M. L.
metadata.dc.type: M.Tech Dessertation
Appears in Collections:MASTERS' THESES (WRDM)

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