Evaluation of drag and lift in the internal flow field of a dual rotor spinning unit via CFD

Abstract

In the present study, we evaluate the drag and lift magnitude in the new dual-feed rotor spinning unit using computational fluid dynamics technique. We adopt theoretical and numerical approach based on FLUENT to investigate the influence of new design on the drag and lift in the rotor interior. Results reveal that the drag and lift inside the rotor of the proposed model are reduced by 60-80% and 50-66% respectively as compared to the conventional unit. The velocity and pressure profiles become evenly distributed in the dualfeed rotor interior as opposed to the conventional rotor spinning unit and this modification is anticipated to improve fiber configurations. This phenomenon can be utilized to further optimize the rotor spinning unit and other wall-bounded engineering problems.

Progress of air flow field and fiber motion analysis in textile manufacturing process: a review

“…It is concluded that the air extraction provides the necessary negative pressure conditions for fiber transportation, and the rotating mechanism facilitates fiber alignment and transfer to the sliding surface and accumulation groove. Akankwasa et al 22 analyzed the lift and drag forces exerted on the fibers by the flow field through the flow velocity, and concluded that the improvement in internal flow field stability was due to a decrease in lift and drag forces.…”