DMCA
A Numerical Scheme for Coupled CFD and CSD Simulation of 3-D Fluid-Membrane Interactions
BibTeX
@MISC{Gan_anumerical,
author = {Yong Gan and Zhen Chen and Stephen Montgomery-smith},
title = {A Numerical Scheme for Coupled CFD and CSD Simulation of 3-D Fluid-Membrane Interactions},
year = {}
}
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Abstract
For coupled computational fluid dynamics (CFD) and computational solid dynamics (CSD) simulation of the three-dimensional fluid-membrane interaction, a numerical scheme is developed by improving the material point method (MPM). In order to compute the stress state at any membrane point, a plane stress assumption is made in the local tangent plane consisting of membrane points, and a simple procedure is proposed to find the effective point connectivity information for determining the orientation of the local tangent plane. With an iterative algorithm, the existing MPM is improved for formulating fluid points so that fluid dynamics problems with strong shocks could be better simulated. The use of an Eulerian background mesh for solving the momentum equations enables the MPM to automatically handle fluid-membrane interactions without requiring special treatment. Three examples are used to demonstrate the features of the proposed numerical scheme, and to compare them with the analytical and FEM solutions. It appears from the comparison that the proposed procedure is robust and efficient to simulate the three-dimensional fluid-membrane interactions. KEY WORDS: 3-D fluid-membrane interactions; material point method; meshless; explicit 1.
Keyphrases
numerical scheme 3-d fluid-membrane interaction coupled cfd csd simulation local tangent plane material point method three-dimensional fluid-membrane interaction membrane point plane stress assumption fluid dynamic problem eulerian background mesh fluid point fluid-membrane interaction momentum equation strong shock fem solution special treatment computational solid dynamic stress state iterative algorithm key word simple procedure proposed procedure effective point connectivity information computational fluid dynamic
