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

Connect thermal streams at a junction

This example shows how to connect multiple Thermal Stream loads using the Thermal Streams Junction simulation object. You need to select at least two thermal streams to create a junction.

  1. Click Home tab→Loads and Conditions group→Simulation Object Type list →Thermal Streams Junction .

  2. In the Name group, type a meaningful name.

  3. In the Stream Inlets 1-5 group, from the Inlet 1 list, select the thermal stream whose inlet is connected to the junction.Alternatively, you can select the thermal stream from the Simulation Navigator or in the graphics window. If a new stream is needed, you can also create it using Create Thermal Stream . For more information, see Create a two-sided stream on edges.

  4. In the remaining inlet boxes of the Stream Inlets 1-5 group and in the Stream Inlets 6-20 group, select up to 20 thermal streams with inlets connected to the junction.

  5. In the Stream Outlets 1-5 and Stream Outlets 6-20 groups, select up to 20 thermal streams with outlets connected to the junction.

  6. Click OK.

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Source: https://docs.sw.siemens.com/en-US/doc/289054037/PL20200601120302950.advanced/xid1924596 · retrieved 2026-07-17