Simcenter FLOEFD Set an initial condition in a fluid region
2024-06-13T17:06:27.000-0400
FLOEFD for Creo
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Simcenter FLOEFD SC
Summary
In some cases, especially in transient simulations, it is necessary to set an initial condition in the fluid region to specify thermodynamic and flow parameters. This article describes the process of how to use a "dummy" solid to define the Initial Condition
Details
In order to define an initial condition for the fluid region different than the one specified in the general settings, for example, when starting a transient calculation using results from a previous run, you have to represent the fluid domain with a solid body and then use the "Initial condition" feature in FLOEFD to apply the fluid parameters:
- In the FLOEFD project, obtain the solid representing the volume. You can see how to do this in the following article: FLOEFD: How to access and inspect the fluid region body (siemens.com). Save the component representing the fluid volume.
- Assemble the fluid component into your top assembly, in this way, you have a “physical” representation of the fluid volume. In the following image, the "model1" component represents the fluid domain which was obtained with the "Check Goemetry" tool and assembled to the top assembly.
- In FLOEFD, don’t change the computational domain and don’t change the mesh settings, instead just add an “Initial condition” applied to the model1 and select “disable component”. With this initial condition you will be able to specify the initial flow and thermodynamics parameters of the fluid, replacing the values from the General Settings: