An immersed boundary method for nonuniform grids

Juwon Jang, Chang Hoon Lee

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We propose a new direct forcing immersed boundary method for simulating the flow around an arbitrarily shaped body in nonuniform grids. A new formulation of the weight function for the distribution of the immersed boundary forcing with an efficient strategy that distributes the Lagrangian points on the surface of the immersed body is developed. We validate our method for various flows induced by a translational or angular motion of a sphere by measuring the lift, drag, and moment coefficients. For an arbitrary shape particle, we test our method for flow around an ellipsoid in the uniform flow. All tests show good agreement with available references. Finally, we investigate the interaction between a tilted ellipsoid and the wall in the uniform flow and the Poiseuille flow.

Original languageEnglish
Pages (from-to)1-12
Number of pages12
JournalJournal of Computational Physics
Volume341
DOIs
Publication statusPublished - 2017 Jul 15

Fingerprint

Drag
uniform flow
grids
ellipsoids
lift coefficients
translational motion
drag coefficients
angular velocity
laminar flow
moments
formulations
coefficients
interactions

All Science Journal Classification (ASJC) codes

  • Numerical Analysis
  • Modelling and Simulation
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)
  • Computer Science Applications
  • Computational Mathematics
  • Applied Mathematics

Cite this

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An immersed boundary method for nonuniform grids. / Jang, Juwon; Lee, Chang Hoon.

In: Journal of Computational Physics, Vol. 341, 15.07.2017, p. 1-12.

Research output: Contribution to journalArticle

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