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RH vacuum refining apparatus circulation pipe parameters directly affect the efficiency of the RH refining process flow of the liquid steel and smelting of high academic value and practical significance , research and analysis of the circulation pipe parameters . At the same time , the use of CFD software computer simulation with traditional mathematical simulation , physical simulation and water model experiment , has its own advantages : effort , save time and money . In this paper, the use of CFD software FLUENT RH water model flow field simulation , research and analysis of the circulation pipe parameters (diameter, depth of insertion , insertion position and spacing ) on the flow of water in the device status and ring flow . The the FLUENT preprocessing software GAMBIT RH refining device ( vacuum chamber , ladle , and the riser ) three-dimensional modeling and meshing . On this basis , the use of the knowledge of mathematics and physics simulation , to determine the calculation of the mathematical model and boundary conditions , simulate convection Field in FLNENT , and then contrast with the simulation results and experimental water model , and discussed . The simulation results show that there is an optimum for a lot of the vacuum chamber , the diameter of the circulation pipe , the this circulation pipe diameter , the fluid flow rate is significantly increased , the circulation flow rate increases , which facilitates the mixing within the RH device , decarburization and degassing ; circulation eccentric tube inserted into the ladle , the larger vortex was found in the vacuum chamber at the bottom of the vacuum chamber and the molten steel surface of the liquid downcomer , but smaller effect on the circulation flow rate ; reduce the circulation tube spacing , the left side of the vacuum chamber wall surface reflux enhance the circulation flow rate decreases ; reduce the circulation pipe insertion depth , the circulation flow rate increases . RH equipment design , under the premise of not slag entrapment , to minimize the circulation pipe insertion depth or increase the circulation tube spacing can improve the circulation flow rate of the liquid steel . The simulation results , can be characterized to determine the impact of the circulation pipe parameters on the morphology and ring flow of molten steel flow has a certain reference value , actual production operation to further improve process efficiency . But at the same time, we should also see that the study only considered separately circulation pipe parameters on the circular flow , does not fully reflect the the circular flow behavior of the entire device ; Again , due to time constraints , only two circulation tube simulation, subsequent research can focus on the root circulation tube simulation .
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