# Physics Models¶

Contents of this Page

## Overview of Submodule¶

**openpnm.models.physics**

This submodule contains models for calculating properties related to physical transport processes, including conductances, reaction rates, and capillary effects

## Detailed Model Documentation¶

### Capillary Pressure¶

Pore-scale models for calculating the capillary pressure in pores/throats.

### Diffusive Conductance¶

Pore-scale models for calculating the diffusive conductance of conduits.

### Electrical Conductance¶

Pore-scale models for calculating the electrical conductance of conduits.

### Hydraulic Conductance¶

Pore-scale models for calculating hydraulic conductance of conduits.

### Thermal Conductance¶

Pore-scale models for calculating the thermal conductance of conduits.

### Poisson Shape Factors¶

Conduit shape factors’ models to correct for the deviation from cylinders in series assumption for Poisson-like physics such as mass diffusion or electrical conduction, etc.

This submodule is deprecated and will be removed the near future. Use openpnm.models.geometry.diffusive_size_factors instead.

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### Flow Shape Factors¶

Conduit shape factors’ models to correct for the deviation from cylinders in series assumption for fluid flow physics such as StokesFlow.

This submodule is deprecated and will be removed the near future. Use openpnm.models.geometry.hydraulic_size_factors instead.

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### Source Terms¶

Pore-scale models to be used as source term (e.g. reaction) in algorithms.