How to define porous zone in SimScale?

SimScale offers two main approaches to define a porous zone:
1. Using Feature Modeling Items:

  • This method involves creating a separate region representing the porous media within your geometry. Here’s the process:

    • In the Simulation tree, navigate to Feature Modeling Items.

    • Click on Add and choose the type of primitive that best represents your porous zone (e.g., box, cylinder).

    • Define the dimensions and position of the primitive to match the location and size of the porous media in your geometry.

    • Right-click on the newly created primitive and select Properties.

    • In the Properties panel, locate the Porous Media section. Here, you can define the porosity and select the appropriate model (e.g., Darcy-Forchheimer) for your application.

    • Specify the model parameters like permeability coefficients or pressure loss curves depending on the chosen model.

2. Using Cell Zones:

  • This method utilizes existing cells in your mesh to define the porous zone. It’s particularly useful for complex geometries where a separate primitive might not accurately represent the porous media. Here’s how to do it:

    • Ensure you have a meshed geometry loaded in SimScale.

    • In the Simulation tree, navigate to Cell Zones.

    • Click on Create and choose a selection method (e.g., box, sphere) to define the region encompassing the porous media cells.

    • Right-click on the newly created cell zone and select Properties.

    • Similar to the Feature Modeling approach, define the porosity and select the porous media model within the Properties panel.

    • Specify the required model parameters for the chosen model.

Additional Considerations:

  • Regardless of the method used, SimScale allows defining isotropic (uniform flow in all directions) or anisotropic (directional flow properties) porous media.

  • You can assign different porous media properties to separate zones if your model has multiple regions with varying characteristics.

  • SimScale offers a user-friendly interface for defining porous media. However, consulting the SimScale documentation or tutorials on porous media simulations is recommended for a more in-depth understanding.


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