Porous Tools

The following options are available:


Directionality	Select Isotropic if the porous loss coefficients are the same in all directions. Porous media such as packed beds are typically isotropic. Select Bidirectional if the porous loss coefficients are specified in the streamwise and crossflow directions. Filters and perforated plates are often porous media that are dependent on direction. Bidirectional is also used for cylindrical or conical filters. Orthotropic is available for filters where the porous loss is different in all three directions.
Viscous	Set the viscous resistance coefficient that controls the momentum loss. It is typically obtained by correlating the pressure drop to velocity using experimental data, when the loss is dominated by viscous effects. It is also equal to the inverse permeability, if that is known. For Bidirectional and Orthotropic, you will need to set the resistance coefficients in the Streamwise and Crossflow directions.
Inertial	Set the inertial resistance coefficient that controls the momentum loss. It is typically obtained by correlating the pressure drop to velocity using experimental data, when the loss is dominated by inertial effects. For Bidirectional and Orthotropic, you will need to set the resistance coefficients in the Streamwise and Crossflow directions.
Porosity	Enter a value between 0 and 1. A porosity of 1 represents a fully open medium. Porosity is used to compute the effective thermal properties of the porous media.
Density	Enter the density of the solid material.
Isotropic thermal conductivity	Enter the Isotropic thermal conductivity of the solid material. This is the material’s ability to conduct heat equally in all directions.
Specific heat	Enter the specific heat capacity of the solid material. It is the heat required to raise the unit mass of a substance by one degree of temperature.