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IASS-SLTE Symposium 2014: Shells, Membranes and Spatial Structures: Footprints


IASS Symposium 2014

SESSION: Computational Methods

Analysis of fluid-flexible body interaction based on a cbs-based partitioned semi-implicit coupling scheme

< Table of Contents for Computational Methods
  • Proceedings Name: IASS-SLTE Symposium 2014: Shells, Membranes and Spatial Structures: Footprints
  • ISSN: (Electronic Version) 2518-6582
  • Session: Computational Methods
  • Title: Analysis of fluid-flexible body interaction based on a cbs-based partitioned semi-implicit coupling scheme
  • Author(s): Dai ZHOU, Jin MA,Tao HE
  • Keywords: fluid-flexible body interaction, characteristics-based split scheme, semi-implicit coupling scheme,combined interface conditions
Abstract
This paper presents an efficient CBS-based partitioned semi-implicit scheme to deal with transient fluid-flexible body interaction analysis. In our algorithm Navier-Stokes equations which govern the incompressible viscous fluid are analyzed by semi-implicit CBS scheme in arbitrary Lagrangian-Eulerian framework. The time advance scheme for structural dynamics adopts Newmark-ß method. The dynamic mesh is updated using moving submesh approach. Meanwhile a mass source term is implanted into CBS scheme to easily satisfy geometric conservation law. A modified combined interface boundary conditions is developed to eliminate the effect of the structure traction. Flow-induced vibrations of flexible bodies are analyzed and the overall numerical results agree well with the existing data, demonstrating the good validity and applicability of the proposed approach.

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