  This article presents the openCFS submodule scattered data reader for
coupling multi-physical simulations performed in different simulation programs.
For instance, by considering a forward-coupling of a surface vibration
simulation (mechanical system) to an acoustic propagation simulation using
time-dependent acoustic absorbing material as a noise mitigation measure. The
nearest-neighbor search of the target and source points from the interpolation
is performed using the FLANN or the CGAL library. In doing so, the coupled
field (e.g., surface velocity) is interpolated from a source representation
consisting of field values physically stored and organized in a file directory
to a target representation being the quadrature points in the case of the
finite element method. A test case of the functionality is presented in the
"testsuite" module of the openCFS software called "Abc2dcsvt". This scattered
data reader module was successfully applied in numerous studies on flow-induced
sound generation. Within this short article, the functionality, and usability
of this module are described.
