A computational setting for the Immersed Boundary Method employing an
adaptive mesh refinement is presented. Enhanced accuracy for the method
is attained locally by covering an immersed boundary vicinity with a sequence
of nested, progressively finer rectangular grid patches which dynamically
follow the immersed boundary motion. The set of equations describing the
interaction between a non stationary, viscous incompressible fluid and
an immersed elastic boundary is solved by coupling a projection method,
especially designed for locally refined meshes, to an implicit formulation
of the Immersed Boundary Method. The main contributions of this work concern
the formulation and the implementation of a multilevel self adaptive version
of the Immersed Boundary Method on locally refined meshes. This approach
is tested for a particular two-dimensional model problem, for which no
significant difference is found between the solutions obtained on a
mesh refined locally around the immersed boundary, and on the associated
uniform mesh, built with the resolution of the finest level.
Roma, A.M.; Peskin, C.S.; Berger, M.J.: An adaptive version of the Immersed Boundary Method, Journal of Computational Physics, 153, 509-534 (1999).