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We present an explicit numerical method for three-dimensional modeling of fast
processes of fluid structure interaction problems in Euler variables. The method does not
require complex spatial grid generation. To set the initial geometry and follow the
deformation of the calculating domains in the process of interaction it is enough to take into
account the interacting surfaces constituted by a set of triangles created by CAD systems. The
method is based on the modified Godunov scheme with the increased accuracy and uniform
for solving equations of fluid dynamics and elastic-plastic flows. Fixed Cartesian grid and
local mobile grids associated with each triangle of the surface are used. The flow parameters
are interpolated from the Cartesian grid to the local grids and vice versa. At the fluid structure
interaction boundary the exact Riemann solver is used.
Keywords: fluid structure interaction problems; numerical method. |
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