Troubleshooting ADINA FSI Simulation: INPUT ERROR: No Node Found in BCD

When running a Fluid-Structure Interaction (FSI) simulation in the ADINA FEM software suite, generating the solver DATA file may abort with the following error:

Environment: ADINA Structures • ADINA CFD • FSI Boundary Condition Definition

*** INPUT ERROR: No node found in BCD 1

Cause and Resolution

This error occurs when the FSI Boundary Condition (BCD) is assigned to the incorrect model body or geometric surface:

• In ADINA FSI modeling, the fluid-structure boundary condition must be explicitly defined on the shared interface surface corresponding to the proper model domain (e.g. defining structural boundary nodes on the solid body and fluid boundary nodes on the fluid body).
• If the FSI boundary surface is mapped to a geometry surface that lacks associated mesh nodes in that model component, ADINA cannot bind any degrees of freedom and throws the No node found in BCD error.

Verify that your interface boundary assignments match the mesh geometry of the active model component before regenerating the DATA file.