Flow Blockage dialog box — Porous Blockage - Isotropic options

Destination Folder
Simulation Object Container	Specifies the folder in the Simulation Navigator in which the boundary condition will be stored. The list includes the root container and existing folders that you created using the New Folder command. Examples of a root container include Load Container, Constraint Container, and Simulation Object Container.
Folder Manager	Displays a hierarchical listing of existing folders. To create a new folder, right-click any level of the hierarchy and choose New Folder.
Porous Blockage Region
Select Object	Lets you select a polygon body to use as the flow obstruction. The surface(s) of the polygon body must mate with the 3D flow mesh.Excluded lets you remove individual entities from within your selected object.
Stacked Smart Selector Methods	Opens the Smart Selector Methods dialog box where you can specify a progression of smart selection filters.For more information, see Smart Selector Methods dialog box.
Options
Specify Method	Controls the resistance force due to the porous flow blockage calculation.With Head Loss and Permeability method, the pressure drop is determined either from the head loss per length and/or from the permeability.With Pressure Drop per Length method, you can specify pressure drop as function of velocity.With Packed Bed of Spheres method, pressure drop is calculated using the specified Diameter of Sphere, Void Fraction, and other physical properties of the fluid.With Fibrous Porous Media method, pressure drop is calculated using the specified Diameter of Fiber, Void Fraction, and other physical properties of the fluid.See Understanding Porous Flow Blockage resistance methods for more information on the different methods.
Flow is Laminar in Blockage	Controls which equations the software is solving in the porous flow blockage.Select Flow is Laminar in Blockage to let the software solve the laminar equations in the porous flow blockage.Clear Flow is Laminar in Blockage to let the software solve the same equations in the porous flow blockage as for the rest of the fluid domain depending on the Turbulence Model specified on the Solution Details page of the Solution dialog box.
Head Loss
Inertial Resistance (drop proportional to dynamic pressure)	Available if you select Head Loss and Permeability from the Specify Method list.Determines if the pressure drop through the porous blockage is calculated using inertial resistance.Select Inertial Resistance to let the software calculate the pressure drop through the porous blockage using inertial resistance. Head Loss per Length must be specified. See Understanding Porous Flow Blockage resistance methods for more information.Clear Inertial Resistance if you only want to use Darcy resistance and select Permeability check box.Note: If you select Head Loss and Permeability from the Specify Method list you should select either Inertial Resistance check box or Permeability check box or both of them, but at least one of them needs to be check.
Head Loss per Length	Available if you select the Inertial Resistance check box. Lets you specify a single value for the head loss per length in unit one over length.
Permeability
Permeability (drop proportional to velocity)	Available if you select Head Loss and Permeability from the Specify Method list.Determines if the pressure drop through the porous blockage is calculated using Darcy resistance.Select Permeability to let the software calculate the pressure drop through the porous blockage using Darcy's law. Permeability Value must be specified. See Understanding Porous Flow Blockage resistance methods for more information.Clear Permeability if you only want to use inertial resistance and select Inertial Resistance check box.Note: If you select Head Loss and Permeability from the Specify Method list you should select either Inertial Resistance check box or Permeability check box or both of them, but at least one of them needs to be check.
Permeability Value	Available if you select the Permeability check box. Lets you specify a single value for the permeability.
Pressure Drop
Pressure Drop	Available if you select Pressure Drop per Length from the Specify Method list. Lets you define the value of the pressure drop as an expression or a function of velocity magnitude. See Understanding Porous Flow Blockage resistance methods for more information.For more information, see Additional magnitude options.
Blockage Length	Available if you select Pressure Drop per Length from the Specify Method list. Lets you specify the length of the porous blockage in the flow direction.
Packed Bed Parameters
Diameter of Sphere	Available if you select Packed Bed of Spheres from the Specify Method list. Lets you specify the diameter of spheres that comprise the isotropic porous material of the blockage. See Understanding Porous Flow Blockage resistance methods for more information.
Void Fraction	Available if you select Packed Bed of Spheres from the Specify Method list. Lets you specify the void fraction (porosity) of the packed bed of spheres. This is the ratio of the void volume to the total volume of the packed bed.
Fibrous Porous Media
Diameter of Fiber	Available if you select Fibrous Porous Media from the Specify Method list. Lets you specify the diameter of fibers that comprise the porous media. See Understanding Porous Flow Blockage resistance methods for more information.
Void Fraction	Available if you select Fibrous Porous Media from the Specify Method list. Lets you specify the void fraction (porosity) of the packed bed of spheres. This is the ratio of the void volume to the total volume of the fibrous porous media.

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Flow Blockage dialog box — Porous Blockage - Isotropic options, Simcenter 3D 2021.1 Series

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