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An immersed-shell method for modelling fluid-structure interactions.

A Viré1, J Xiang2, C C Pain2

  • 1Wind Energy Group, Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands a.c.vire@tudelft.nl.

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|January 14, 2015
PubMed
Summary
This summary is machine-generated.

This study introduces the immersed-shell approach for fluid-structure interaction modeling. This novel numerical method efficiently simulates complex interactions by coupling fluid and structural dynamics on an extended computational domain.

Keywords:
aerodynamicsfluid–structure interactionsimmersed-body approach

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Area of Science:

  • Computational fluid dynamics
  • Numerical modeling
  • Fluid-structure interaction

Background:

  • Accurate simulation of fluid-structure interactions (FSI) is crucial in various engineering disciplines.
  • Existing numerical methods often face challenges in efficiently handling complex geometries and coupling fluid and solid dynamics.

Purpose of the Study:

  • To present a novel numerical method, the immersed-shell approach, for modeling fluid-structure interactions.
  • To demonstrate the theoretical underpinnings and practical implementation of this new FSI modeling technique.

Main Methods:

  • Solving fluid-dynamics equations on an extended domain encompassing both fluid and solid structures.
  • Employing a penalty force to relax fluid and solid velocities, acting on a thin shell surrounding solid structures.
  • Representing the shell via a non-zero concentration field obtained by mapping the shell mesh onto the extended mesh.

Main Results:

  • The paper outlines the theoretical framework of the immersed-shell approach.
  • It details the coupling mechanism between fluid-dynamics and structural-dynamics solvers.
  • Initial results for fundamental cases demonstrating the method's applicability are presented.

Conclusions:

  • The immersed-shell approach offers a novel and effective strategy for numerically modeling fluid-structure interactions.
  • This method facilitates robust coupling between fluid and structural solvers within a unified computational framework.
  • Further validation and application to more complex scenarios are warranted.