A 3D numerical model for a flexible fiber motion in compressible swirling airflow

Hui Fen Guo, Bingang Xu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

10 Citations (Scopus)


A numerical method is developed for modeling the dynamics of a flexible fiber immersed in a compressible swirling flow. The modeling approachis based on combining an Eulerian finite volume formulation for the fluidflow and a Lagrangian small-deformation formulation for the dynamics of the fiber. The fiber is modeled as a chain of beads connected through mass-less rods. The bending and twisting deformation of the fiber are represented by the displacements of the successive beads. A computational strategy is proposed for the computation of the fluid parameters at the center of discrete fiber sections. To deal with the fiber-wall interaction, a wall model is also developed. The new algorithm was verified against the experimental observations using high-speed photography. The proposed model has also been applied in a textile process to simulate the fiber motions in the two nozzles (i.e., cylindrical and diverged conical tubes, respectively) of an air-jet spinning machine, and consequently, the principle ofthe air-jet yarn formation can be demonstrated.
Original languageEnglish
Pages (from-to)201-222
Number of pages22
JournalCMES - Computer Modeling in Engineering and Sciences
Issue number3
Publication statusPublished - 11 Oct 2010


  • Compressible swirling flow
  • Dynamic analysis
  • Fiber motion
  • Nozzle

ASJC Scopus subject areas

  • Software
  • Modelling and Simulation
  • Computer Science Applications

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