Effect of the geometric parameters on a flexible fiber motion in a tangentially injected divergent swirling tube flow

Hui Fen Guo, Chong Wen Yu, Bingang Xu, Sheng Yan Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)


A particle-level simulation method is employed to study the effects of some geometric parameters, such as the injector diameter, the injection angle and position on fiber motions in a 3D compressible decaying swirling flow in a divergent tube. The flexibility of the fiber is defined by the bending and twisting displacements. The fiber-wall collision and compressible effects are considered here. The fiber with different complex configurations moves as spiral orbit with stream-wise direction. With the increase in the injector diameter, the deformation degree of the fiber increases. For a larger injector diameter, the fiber appears to be closed coil loops or asymmetric S-loopturn. The larger the injection angle is, the earlier the fiber starts to swirl and the larger the number of 'turn' is. The complex coiled configurations with entanglement can be observed under small injection angle. Especially, a 'zigzag' configuration is formed for larger injection angle and injection position.
Original languageEnglish
Pages (from-to)1033-1046
Number of pages14
JournalInternational Journal of Engineering Science
Issue number10
Publication statusPublished - 1 Oct 2011


  • Fiber configuration
  • Fiber flexibility
  • Recirculation zone
  • Swirling flow

ASJC Scopus subject areas

  • Engineering(all)

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