Analysis of the novel hybrid cyclone separators using large-eddy simulation

Abstract

In this study, we propose novel hybrid square-circular cyclone variants that take advantage of both square and circular cyclones. A total of five cyclone models are analyzed – a square cyclone (baseline model), two cyclone separators having a cylindrical segment over the top with the square section in the remaining part, and the two cyclone models having square segment over the top with a cylindrical section in the lower part. The performance of hybrid cyclones is evaluated using numerical simulations. Apart from mean as well as fluctuating pressure and velocity field, we closely examine the vortex core in both square cyclone and proposed hybrid cyclone geometries. With the proposed hybrid cyclone geometries, it is possible to have a flow field with or without the vortex core – this is a unique way of making selection. Furthermore, the enhancement in performance of hybrid cyclones is significant compared to the baseline model.