In Simulia Fluid Scenario Creation (part of the 3DEXPERIENCE platform), the Solid Interface plays a crucial role when simulating Fluid-Solid Interaction. Specifically, the Solid Interface enables the interaction between fluid domains (modeled in CFD) and solid structures (modeled in structural mechanics).
Here's a concise explanation of how it works:
🔧 What is Solid Interface in Scenario Creation?
The Solid Interface is a boundary definition that:
- Connects a solid (structural) domain to a fluid (CFD) domain.
- Ensures bidirectional coupling: structural deformation affects fluid flow, and fluid pressure/stress affects solid deformation.
🧩 Key Features:
- Defines the shared surface between the fluid and solid parts.
- Automatically transfers fluid forces (e.g., pressure, viscous stress) to the structure.
- Transfers structural displacements or velocities to the fluid mesh..
✅ Usage in Scenario Creation App:
- You assign the solid interface as a boundary condition or connection in your scenario setup.
- It appears as a "Fluid-Solid Interface" type when defining the physics of the system.
- It is essential in simulations like airflow over a flexible structure, blood flow in arteries, or fluid sloshing in tanks where both domains are highly coupled.
The Automatic Solid Interface in Simulia Scenario Creation automatically detects contact between all fluid and solid parts in a model. It enables conjugate heat transfer when thermal effects are active and fluid-structure interaction when rigid body motion is involved. When solid physics is included, this interface is created by default and can be managed or modified through the Physics Manager or Scenario tree.
