SimScale offers two main approaches to define a porous zone:
1. Using Feature Modeling Items:
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This method involves creating a separate region representing the porous media within your geometry. Here’s the process:
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In the Simulation tree, navigate to Feature Modeling Items.
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Click on Add and choose the type of primitive that best represents your porous zone (e.g., box, cylinder).
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Define the dimensions and position of the primitive to match the location and size of the porous media in your geometry.
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Right-click on the newly created primitive and select Properties.
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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.
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Specify the model parameters like permeability coefficients or pressure loss curves depending on the chosen model.
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2. Using Cell Zones:
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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:
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Ensure you have a meshed geometry loaded in SimScale.
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In the Simulation tree, navigate to Cell Zones.
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Click on Create and choose a selection method (e.g., box, sphere) to define the region encompassing the porous media cells.
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Right-click on the newly created cell zone and select Properties.
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Similar to the Feature Modeling approach, define the porosity and select the porous media model within the Properties panel.
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Specify the required model parameters for the chosen model.
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Additional Considerations:
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Regardless of the method used, SimScale allows defining isotropic (uniform flow in all directions) or anisotropic (directional flow properties) porous media.
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You can assign different porous media properties to separate zones if your model has multiple regions with varying characteristics.
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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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