A computational study of supersonic disk-gap-band parachutes using Large-Eddy Simulation coupled to a structural membrane

K. Karagiozis, R. Kamakoti, F. Cirak, C. Pantano

Research output: Contribution to journalArticlepeer-review

Abstract

Large-scale fluid-structure interaction simulations of compressible flows over flexible supersonic disk-gap-band parachutes are compared with matching experimental results. We utilize adaptive mesh refinement, large-eddy simulation of compressible flow coupled with a thin-shell structural finite-element model. The simulations are carried out in the regime where large canopy-area oscillations are present, around and above Mach 2, where strong nonlinear coupling between the system of bow shocks, turbulent wake and canopy is observed. Comparisons of drag history and its dependence on Mach number are discussed. Furthermore, it is observed that important dynamical features of this coupled system can only be reproduced when sufficient grid resolution is used. Lack of resolution resulted in incorrect flow-physics prediction and, consequently, incorrect fluid-structure interaction coupling.

Original languageEnglish (US)
Pages (from-to)175-192
Number of pages18
JournalJournal of Fluids and Structures
Volume27
Issue number2
DOIs
StatePublished - Feb 1 2011

Keywords

  • Compressible flow
  • Fluid-membrane interaction
  • Large-eddy simulation
  • Structural membrane
  • Supersonic parachute
  • Turbulence-structure interaction

ASJC Scopus subject areas

  • Mechanical Engineering

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