Dynamics of Flexible Filament in Viscous Oscillating Flow

Mithun Kanchan, Ranjith Maniyeri

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The dynamics of flexible filament in a viscous fluid is a complex fluid–structure interaction problem that has wide scientific and engineering applications in emerging fields such as biomimetics and biotechnology. Coupling the structural equations with fluid flow poses a number of challenges for numerical simulation. In this regard, techniques like immersed boundary method (IBM) have been quite successful. In the present study, a two-dimensional numerical simulation of flexible filament in a rectangular channel with an oscillating fluid flow at low Reynolds number is carried out using IBM. The discretization of governing continuity and Navier–Stokes equation is done by finite volume method on a staggered Cartesian grid. SIMPLE algorithm is used to solve fluid velocity and pressure terms. The filament mechanical properties like stiffness and bending rigidity are incorporated into the governing equation via Eulerian forcing term. An oscillating pressure gradient drives the fluid while the flexible filament is fixed to the bottom channel wall. The simulation results are validated with filament dynamic studies of previous researchers. The interaction of the filament with nearby oscillating fluid motion is well captured by the developed numerical model.

Original languageEnglish
Title of host publicationRecent Asian Research on Thermal and Fluid Sciences - Proceedings of AJWTF7 2018
EditorsAbhilash Suryan, Deog Hee Doh, Minoru Yaga, Guang Zhang
PublisherSpringer Science and Business Media Deutschland GmbH
Number of pages14
ISBN (Print)9789811518911
Publication statusPublished - 2020
Event7th Asian Joint Workshop on Thermophysics and Fluid Science AJWTF7 2018 - Trivandrum, India
Duration: 21-11-201824-11-2018

Publication series

NameLecture Notes in Mechanical Engineering
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364


Conference7th Asian Joint Workshop on Thermophysics and Fluid Science AJWTF7 2018

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes


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