A new fluid structure coupling
Application to parachute modelling
DOI:
https://doi.org/10.13052/REMN.16.521-536Keywords:
parachute, permeability, penalty Euler-Lagrange coupling, porous coupling, ALE formulation, Ergun EquationAbstract
The modelling of parachutes at Irvin Aerospace Inc. was based on the penalty Euler-Lagrange coupling method to compute the interaction between an Arbitrary Lagrange Euler formulation for the air flow and an updated Lagrangian finite element formulation for the canopy dynamics. This approach did not permit the effect of fabric porosity to be accounted for. In this paper, a new porosity Euler-Lagrange coupling models the fabric permeability by assessing the interaction forces based on the Ergun porous flow model. This paper provides validations for the technique when considering parachute applications and discusses the interest of this development to the parachute designer.
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