Study on transient flow analysis of viscosity fluid in spinning metering pump

Abstract The spinning metering pump serves as a critical component that delivers the spinning solution with high precision and directly governs the efficiency of wet spinning industrialization. Nevertheless, manual adjustment of pump output often causes raw material loss and low operational efficiency. A geometric model of the metering pump was imported into the computational fluid dynamics (CFD) solver for flow field simulations and visualization of the internal solution dynamics to rapidly determine the optimal operating parameters. Transient flow analysis quantified the influence of fluid properties, flow field conditions, and structural dimensions on outlet flow rate, flow ripple, and volumetric efficiency. The simulations reveal that high viscosity fluid, fast rotational speed, low outlet pressure, and small radial clearance yield a volumetric efficiency of 97.99 % and markedly suppress flow ripple. This study provides an accessible yet powerful strategy for visualizing the performance of spinning metering pumps and guiding the design of high efficiency and low power spinning systems with strong theoretical and engineering value.