Interface Treatment under No-Slip Conditions Using Level- Set Virtual Particles for Fluid-Structure Interaction

Gaku Hashimoto, kenji Ono

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    We show that a fluid-structure coupling method based on a fixed Eulerian mesh using the level set function is applicable to fluid-structure interaction (FSI) problems involving incompressible viscous fluids and thin elastic structures. The coupling method was originally proposed for large-deformation FSI analyses of high-speed compressible inviscid flows and thin structures such as airbags. We introduce a novel interface-treatment technique that uses virtual particles with level sets and structural normal velocities to enforce the kinematical condition at the fluid-structure interface on a fluid fixed mesh. The virtual particles also have structural tangent velocities so as to impose no-slip conditions at the interface. Application of the method to finite-deformation FSI problems, and comparison of the results with those obtained by the conventional moving ALE mesh-based scheme show the adequacy of the method. It is confirmed that the appearance of the flow and geometry of the interface are similar to those for the ALE scheme.
    Original languageEnglish
    Pages (from-to)325-342
    Number of pages18
    JournalTheoretical and Applied Mechanics Japan
    Volume58
    Issue number0
    DOIs
    Publication statusPublished - 2010

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