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Fluid-solid interaction (FSI) is one of the most challenging problems in computational mechanics field. Also the demands of simulations for fluid-solid interaction problem are continuously increasing in the various industries. It is very difficult mission to obtain the numerical solution of FSI problems because of non-matching meshes along the fluid-solid interface. In this study, non-matching meshes on the fluid-solid interface are effectively connected by using variable-node element. The description of the presented scheme is posted on Fig.1. And, two numerical examples are posted to verify the performance of the present scheme.
Fig. 1 The connection of non-matching curved interface by using variable-node elements
Fig. 2 Elimination of overlays and gaps by using variable-node elements
Channel flow with an elastic wall
Channel flow with an elastic wall
Fig. 3 Configuration of analysis model and computation condition for the first example
Fig. 4 Comparison between non-matching case and matching case
Flow through a circular channel with an elastic wall
Flow through a circular channel with an elastic wall
Fig. 5 Configuration of analysis model and computation condition for the second example
Fig. 6 The convergence rate as increasing the mesh density
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