A Sharp-Interface Immersed Boundary Method for Simulating Incompressible Flows with Arbitrarily Deforming Smooth Boundaries

Zuo Cui, Zixuan Yang, Hong Zhou Jiang, Wei Xi Huang, Lian Shen

Research output: Contribution to journalArticle

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Abstract

We develop a sharp interface immersed boundary (IB) method to simulate the interactions between fluid flows and deformable moving bodies. Fluid-solid interfaces are captured using a level-set (LS) function, which is updated at every time step by a reinitialization procedure. Motions of solid bodies are dynamically coupled with fluid flows by calculating the fluid forces exerted on solid bodies. The accuracy and robustness of the LS-based IB method are tested systematically in the context of several benchmark cases and self-propelled fish swimming. The effects of computational parameters on the accuracy of deformable body capturing are analyzed. It is found that the algorithm performs well in simulating the flow motions surrounding the deforming and moving bodies.

LanguageEnglish (US)
Article number1750080
JournalInternational Journal of Computational Methods
Volume15
Issue number1
DOIs
StatePublished - Feb 1 2018

Fingerprint

Immersed Boundary Method
Incompressible flow
Incompressible Flow
Level Set
Fluid Flow
Flow of fluids
Fluid
Fluids
Motion
Fish
Benchmark
Robustness
Interaction

Keywords

  • Computational fluid dynamics
  • fluid-structure interaction
  • immersed boundary method
  • level-set method

Cite this

A Sharp-Interface Immersed Boundary Method for Simulating Incompressible Flows with Arbitrarily Deforming Smooth Boundaries. / Cui, Zuo; Yang, Zixuan; Jiang, Hong Zhou; Huang, Wei Xi; Shen, Lian.

In: International Journal of Computational Methods, Vol. 15, No. 1, 1750080, 01.02.2018.

Research output: Contribution to journalArticle

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