Flow-field distribution and parametric-optimisation analysis of spiral-tube separators

► Flow-field simulation analyses were performed for spiral-tube separators both with and without holes. ► Effects of gyration radius, inlet flowrate, the number of spiral coils, and oil-droplet diameter were analysed. ► Gyration radius and inlet velocity are two main factors affecting the separation characteristics of spiral-tube separators. ► The size of the holes in a spiral-tube separator also affects the separation results of spiral-tube separators.