Thermo Hydro Mechanics Process

This page describes Thermo-Hydro-Mechanics Process (THM).

Introduction

Theoretical background

Implementation

Supported phases

• Aqueous liquid
• Frozen liquid
• Solid

Input variables and parameters

List of medium properties required by THM process.

Medium properties

• bulk modulus
• density
• specific heat capacity

Input parameters in the project file

THM process has to be declared in project file in the processes block. For example in following way:

<processes>
    <process>
        <type>THERMO_HYDRO_MECHANICS</type>
    </process>
</processes>

Process variables

Following process variables are available in THM process:

• temperature
• pressure
• displacement

For more details, see Process variables.

Example of full section defining THM process

Features

Specific body force

Thermal porosity mixing

THM can automatically obtain thermal conductivity for the medium based on thermal conductivities of phases and porosity.

See Thermal conductivity: effective porosity mixing for more information.

Examples

Available benchmarks

To gain more insight into THM process, you can investigate THM benchmarks.

References