Local Stability Enhancement of Immersed Boundary Methods

Christoph Brehm, Hermann F. Fasel

Research output: Contribution to conferencePaper

Abstract

The objective of this work is to develop a strategy to improve the robustness of immersed boundary methods. The basic approach was introduced for specific types of partial difierential equations in our previous publications. This paper elaborates on these ideas and provides a more general framework on how to apply the concept of local stability enhancement to difierent types of problems of engineering interest. The key feature of this immersed boundary method is that local stability constraints are taken into account in the derivation of thefinite-Difierence stencil coeficients at irregular grid points. Various applications of this immersed method are presented to incorporate high-order discretization andfiuid-structure-interaction problems, where numerical robustness is still a key issue. The variety of successful applications of this immersed boundary approach demonstrates the robustness andfiexibility of the method achieved through improved stability characteristics.

Original languageEnglish (US)
StatePublished - Jan 1 2012
Event7th International Conference on Computational Fluid Dynamics, ICCFD 2012 - Big Island, United States
Duration: Jul 9 2012Jul 13 2012

Conference

Conference7th International Conference on Computational Fluid Dynamics, ICCFD 2012
CountryUnited States
CityBig Island
Period7/9/127/13/12

Keywords

  • Immersed boundary
  • Immersed interface
  • Numerical stability analysis

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Aerospace Engineering
  • Computational Mechanics
  • Mechanical Engineering
  • Mechanics of Materials
  • Condensed Matter Physics

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  • Cite this

    Brehm, C., & Fasel, H. F. (2012). Local Stability Enhancement of Immersed Boundary Methods. Paper presented at 7th International Conference on Computational Fluid Dynamics, ICCFD 2012, Big Island, United States.