@article{Liu2026, 
author = {Yisheng Liu and Xufeng Sun and Zhifeng Chen},
title = {Numerical and Experimental Investigation of Filament-End Dynamics in Negative-Pressure Pneumatic Transport},
year = {2026},
journal = {Fluid Dynamics & Materials Processing},
volume = {22},
number = {3},
pages = {12},
keywords = {Yarn-end capture, negative-pressure adsorption, fluid–structure interaction (FSI), aerodynamic characteristics, negative pressure jet},
url = {https://www.sciopen.com/article/10.32604/fdmp.2026.077267},
doi = {10.32604/fdmp.2026.077267},
abstract = {This study addresses the optimization of automated yarn handling in textile manufacturing by examining the related suction process through a combined numerical and experimental approach. In particular, a three-dimensional model of the suction nozzle was coupled with an equivalent linear-elastic beam representation of the yarn, and a Fluent–IDW–Abaqus weakly coupled fluid–structure interaction (FSI) framework was employed to capture the yarn’s release and dynamic response under negative-pressure suction. High-speed imaging experiments validated the simulations, demonstrating excellent agreement in displacements and velocities. According to the results, increasing the initial suction pressure from −0.04 MPa to −0.06 MPa reduces adsorption time by approximately 62% and markedly dampens yarn-end vibrations, enhancing suction performance. Pressures beyond −0.06 MPa, however, induce overshoot and nozzle collisions, increasing the risk of entanglement and mechanical damage. The outcomes of a statistical analysis are also presented to further quantify the interplay among energy consumption, suction efficiency, and operational success under varying pressures, thereby providing a rigorous foundation for the optimal selection of pressure parameters in automated yarn-handling systems.}
}