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Boundary conditions > Simulation objects > Simcenter 3D Thermal/Flow, Electronic Systems Cooling, and Space Systems Thermal simulation objects

Disjoint Fluid Mesh Pairing

Use the Disjoint Fluid Mesh Pairing simulation object to connect disjoint body-fitted fluid meshes when solving models with the parallel flow solver. You can manually specify pairs of faces as contact pairs, or you can allow the software to automatically identify faces of separate polygon bodies that are in contact with each other.

Fluid can flow between polygon bodies that have one or more coplanar face pairs where the nodes and elements of the associated body-fitted fluid meshes are not coincident.

Where do I find it?

Application Pre/Post
Prerequisite Parallel flow solver
Command Finder Disjoint Fluid Mesh Pairing
Simulation Navigator Right-click the Simulation Object Container node→New Simulation ObjectDisjoint Fluid Mesh Pairing
How do I

Create disjoint fluid mesh pairings

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Inputs to expressions

Automatic face pairing

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Auto-generated expressions

Quick links

Simcenter 3D Thermal/Flow, Electronic Systems Cooling, and Space Systems Thermal boundary conditions

Thermal/Flow, Electronic Systems Cooling, and Space Systems Thermal

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Disjoint Fluid Mesh Pairing, Simcenter 3D 2021.1 Series

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Source: https://docs.sw.siemens.com/en-US/doc/289054037/PL20200601120302950.advanced/xid630067 · retrieved 2026-07-17