We have developed a strong-coupling approach based on a uniformly-applied Eulerian
description for both fluid and solid and provided a simple monolithic formulation to compute
highly flexible structures interacting with surrounding fluid flows. Using a fast-tracking
method and a fast solver for the modified pressure equation with variable density, we keep
the same low computational cost as in the uniform density case studied previously. The new
algorithm is first validated by the simulation of the self-sustained oscillation of a flexible …