Computational Modeling and Simulation of Gas Turbulence Phenomena in Solution Blow Spinning Process for Ceramic Nanofibers

The high-speed air profile expelled from a solution blow spinning nozzle was investigated using computational fluid dynamics and a k-ε turbulence model. A convergent nozzle comprised of a polymer solution channel, an air inlet and an air chamber were computationally generated to better understand the behavior of the fluids inside the matrix. Three meshes were proposed to study the influence of air velocity, pressure, and turbulent kinetic energy. The variation in gas outlet velocity reveals a lack of uniformity in the profile, indicating that the tube length is insufficient to achieve uniformity, which may significantly impact fiber morphology. Under different pressures (40 and 30 psi), there was a reduction in the average gas velocity inside and at the tube outlet. However, uniformity has not yet been achieved, potentially affecting fiber continuity.Published in International Journal of Advances in Engineering & Technology (IJAET), Volume 16 Issue 4, pp. 129-143, August 2023. Weblink: https://www.ijaet.org/media/1I76-IJAET1604851-v16-i4-pp129-143.pd