An immersed boundary method for solving the compressible Navier-stokes equations with fluid-structure interaction

Christoph Brehm, Michael F. Barad, Cetin C. Kiris

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

23 Scopus citations

Abstract

An immersed boundary method for the compressible Navier-Stokes equation and the additional infrastructure that is needed to solve moving boundary problems and fully cou­pled fluid-structure interaction is described. All the methods described in this paper were implemented in NASA’s LAVA solver framework. The underlying immersed boundary method is based on the locally stabilized immersed boundary method that was previously introduced by the authors. In the present paper this method is extended to account for all aspects that are involved for fluid structure interaction simulations, such as fast geometry queries and stencil computations, the treatment of freshly cleared cells, and the coupling of the computational fluid dynamics solver with a linear structural finite element method. The current approach is validated for moving boundary problems with prescribed body motion and fully coupled fluid structure interaction problems in 2D and 3D. As part of the validation procedure, results from the second AIAA aeroelastic prediction workshop are also presented. The current paper is regarded as a proof of concept study, while more advanced methods for fluid structure interaction are currently being investigated, such as geometric and material nonlinearities, and advanced coupling approaches.

Original languageEnglish
Title of host publication34th AIAA Applied Aerodynamics Conference
DOIs
StatePublished - 2016
Event34th AIAA Applied Aerodynamics Conference, 2016 - Washington, United States
Duration: Jun 13 2016Jun 17 2016

Publication series

Name34th AIAA Applied Aerodynamics Conference

Conference

Conference34th AIAA Applied Aerodynamics Conference, 2016
Country/TerritoryUnited States
CityWashington
Period6/13/166/17/16

Bibliographical note

Publisher Copyright:
© 2016, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

ASJC Scopus subject areas

  • Aerospace Engineering
  • Mechanical Engineering

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