Improved volume conservation in the computation of flows with immersed elastic boundaries

Charles Peskin

Research output: Contribution to journalArticle

Abstract

This paper introduces a recipe for the construction of a finite-difference divergence operator the coefficients of which are completely determined once an interpolation scheme has been chosen. Substitution of this divergence operator for the previously used divergence based on central differences makes a dramatic improvement in the overall volume conservation that is observed in an immersed-boundary computation. This improvement is particularly important for computations in which an elastic boundary separates chambers containing fluid at substantially different pressures, a situation which is prominent in cardiac fluid dynamics during the contraction of the ventricles.

Original languageEnglish (US)
Pages (from-to)33-46
Number of pages14
JournalJournal of Computational Physics
Volume105
Issue number1
DOIs
StatePublished - 1993

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conservation
Conservation
divergence
Fluid dynamics
operators
Interpolation
Substitution reactions
fluid dynamics
contraction
interpolation
Fluids
chambers
substitutes
fluids
coefficients

ASJC Scopus subject areas

  • Computer Science Applications
  • Physics and Astronomy(all)

Cite this

Improved volume conservation in the computation of flows with immersed elastic boundaries. / Peskin, Charles.

In: Journal of Computational Physics, Vol. 105, No. 1, 1993, p. 33-46.

Research output: Contribution to journalArticle

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