Abstract
The sand absorption performance of the suction cutter affects the sand removal effect of the oil-water separator to a great extent. The bottom flow field model of the separator tank with the suction cutter is established by means of numerical simulation, which includes the determination of the applicable solid-liquid two-phase flow model and the establishment of the basic fluid dynamics equation in line with the reality. After Gambit was used to divide the mesh, Fluent software was used to analyze the influence of sand suction cutter placement Angle, sand suction velocity, sand suction distance and other factors on sand suction performance. It is found that with the adjustment of many factors, the hydraulic sand absorption performance of the suction cutter changes obviously.
Highlights
Oil-water separators will have a large amount of sand deposited after they are used for a long time
The study model can be simplified as a solid-liquid two-phase flow model of which the bottom part of the separator only includes water and sand space [3]
For the solid-liquid two-phase flow model containing both water and sand, considering the small diameter of sand, the solid phase and liquid phase are taken as two different continuous mediums, that is, the two-fluid model described by Euler method is used for analysis
Summary
Oil-water separators will have a large amount of sand deposited after they are used for a long time. If they are not cleaned in time, their separation efficiency will be decreased. Automatic sand suction device is needed to clean the sand inside the separator [1]. The study model can be simplified as a solid-liquid two-phase flow model of which the bottom part of the separator only includes water and sand space [3]. In the process of sand suction, the flowing water makes the sand deposited at the bottom move irregularly. The volume fraction of the sand in the study area after the same period of time is taken as the evaluation standard of sand suction efficiency. After the mesh volume stereogram has been created by Gambit software, two-dimensional finite element analysis was performed on it by Fluent software
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