TY - JOUR
T1 - A computational study of supersonic disk-gap-band parachutes using Large-Eddy Simulation coupled to a structural membrane
AU - Karagiozis, K.
AU - Kamakoti, R.
AU - Cirak, F.
AU - Pantano, C.
N1 - Funding Information:
This work was supported by the Jet Propulsion Laboratory under Contract 1291711 with the California Institute of Technology (technical program manager Dr A. Sengupta). The authors would like to thank Prof. P.E. Dimotakis for introducing them to the flow-physics of supersonic parachutes. The authors are also thankful to the Supercomputing and Visualization Facility of the Jet Propulsion Laboratory for providing the computational time used for the simulations.
PY - 2011/2
Y1 - 2011/2
N2 - 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.
AB - 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.
KW - Compressible flow
KW - Fluid-membrane interaction
KW - Large-eddy simulation
KW - Structural membrane
KW - Supersonic parachute
KW - Turbulence-structure interaction
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U2 - 10.1016/j.jfluidstructs.2010.11.007
DO - 10.1016/j.jfluidstructs.2010.11.007
M3 - Article
AN - SCOPUS:79151469010
VL - 27
SP - 175
EP - 192
JO - Journal of Fluids and Structures
JF - Journal of Fluids and Structures
SN - 0889-9746
IS - 2
ER -