Numerical Simulation Of Gas-liquid Cyclone Separator Structure Optimization

For the present study aspects of the gas-liquid separator cyclone mostly targetedoptimization, designing a low power, high efficiency separator is the common goal ofresearch. A simulation has been carried out to study the structural parameters of theseparator affect its performance,such as diffusion cone exhaust pipe、inlet parametersand the ash bucket based on the RSM and DPM models provided by fluent software.Simulation results show that the pressure drop lower than before and the collectionefficiency has a obvious improvement with increase of cone angle which between0and20.Until the critical angle is reached, the pressure higher than that in theconventional, but the separation efficiency is increased by9.2%. While I have made astudy for the exhaust pipe lengh, Simulation results show that the pressure drop lowerthan before and the collection efficiency has a obvious improvement when S/a is from0.8to1.0.But both of them becomes worse when it beyond1.0.The optimum ratio ofvortex finder insertion length to inlet height S/a is from0.8to1.0.Using the similarmethod to study how the structure of inlet influence the results. Simulation resultsshow that the symmetrical form of the entrance is conducive to the formation of thesymmetrical flow field,With the increasing of inlets the drop pressure has a slightlyincrease,but it is significant for the collection efficiency.The optimum inlets is2,butmaybey Inlet aspect ratio have more significiant influence to the results. The resultsshow that the maximum tangential velocity in the cyclone increases with decreasingof the inlet dimensions, but the pressure drop is lowered. When the inlet width iswider than the gap between the cyclone barrel and vortex finder wall, part of theincoming flow will impact the vortex finder and affect the flow field. When the widthor height of the inlet decreases, the pressure drop has no significant change. When thewidth is reduced, the separation efficiency can be improved, but the height is theopposite. When the inlet height a/D and width b/D are0.20, both dimensions lead tothe close pressure drop, but the separation efficiency has a difference of3.6%. When the inlet height a/D is0.38, the separation efficiency of cyclone is95.6%, and thepressure drop340Pa. When the inlet width b/D is0.25, the separation efficiency is96.3%, and the pressure drop320Pa. The effect of inlet width is more significantthan that of inlet height, especially for the separation efficiency. The ash bucket withstraight pipe...