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A Fluid-Structure Interaction Simulation by Smoothed Particle Hydrodynamics
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BibTeX
@MISC{Farahani_afluid-structure,
author = {Mehrdad H. Farahani and Nima Amanifard and S. Majid Hosseini},
title = {A Fluid-Structure Interaction Simulation by Smoothed Particle Hydrodynamics},
year = {}
}
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Abstract
Abstract — It is still difficult for traditional methods to simulate fluid-structure interaction (FSI) problems which are increasingly used to model cardiovascular system, and human organism. This contribution develops a new numerical method to analyze FSI, based on smoothed particle hydrodynamics (SPH). The Lagrangian and meshless characteristics of SPH presents distinct features to devise the method by which both fluid and elastic structure continua are coupled using a monolithic but explicit numerical algorithm. The method consists of a predictor-corrector scheme in which the first step plays the role of prediction, whereas in the second step velocity field is corrected according to the incompressibility constraint. The no-slip boundary condition is imposed on deformable walls by projecting the fluid velocities on ghost particles which carry with solid particles at the interface boundary. The method is employed to simulate pulsatory flow of an isothermal and incompressible fluid moving through flexible walls. Index Terms — Smoothed particle hydrodynamics (SPH), Fluid-structure interaction (FSI), Lagrangian method, no-slip boundary condition
Keyphrases
smoothed particle hydrodynamics fluid-structure interaction simulation no-slip boundary condition fluid-structure interaction fluid velocity deformable wall elastic structure continuum flexible wall lagrangian method particle hydrodynamics predictor-corrector scheme ghost particle human organism index term pulsatory flow incompressible fluid traditional method meshless characteristic incompressibility constraint solid particle second step velocity field explicit numerical algorithm interface boundary first step sph present distinct feature cardiovascular system new numerical method
