We start the tutorial by definining the problem as a multiphysics case, The wet interface is matching between the fluid and structural domains. The fluid domain is discretized using a finite volume mesh with 7912 nodes and 15292 triangular volumes. The cantilever is discretized using 1000 4-node quad elements with linear interpolation. The linearized problem in BGS form is solved iteratively until convergence. Continuity of displacements is defined as SU2 adopts a partitioned approach for Fluid-Structure Interaction that requires imposing compatibility and continuity conditions at the FSI interface \(\Gamma = \Omega_f \cap \Omega_s\). Please refer to this document for more information. The equations presented here are a summary of the approach to FSI in SU2 that is further described in R. Moreover, you will need two mesh files for the flow domain and the cantilever. There is a FSI config file and two sub-config files for the flow and structural subproblems. You can find the resources for this tutorial in the folder fsi/steady_state of the Tutorials repository. In this tutorial, we use the same problem definition as for most structural tutorials, a vertical, slender cantilever, clamped in its base, but in this case it is immersed in a horizontal flow in a channel. Changes required to the config files of each subproblem.Coupling boundary conditions on primary config file.Nonlinear structural mechanics and incompressible Navier-Stokes flow.Setting up a multiphysics problem in SU2.This tutorial combines SU2’s fluid and structural capabilities to solver a steady-state Fluid-Structure Interaction problem.
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