The Temperature Update model

The Temperature Update model must be used in combination with the Heat Conduction model to ensure the function of the heat conduction algorithm as described in (Chaudhuri, Muzzio and Tomassone 2006).

This model is originally designed and validated with the Hertz-Mindlin Base model only.

After all the heat fluxes have been calculated, the temperature change over time of each particle is updated explicitly using:

where m_p, C_P and T are the mass, specific heat capacity and temperature of the particle material type. The RHS denotes the sum of convective and conductive heat fluxes.

Ensure that the Update Temperature particle body force model is added to the particle body force model.

Interaction	Configurable Parameters	Position
Particle to Particle (heat conduction)	Set the thermal conductivity for each type of particle.  The unit depends on the temperature unit; for example, the unit will be W/mK when the temperature unit is Kelvin	Last
Particle to Geometry(heat conduction)	Set the thermal conductivity for each type of particle for the particle-geometry contact	Last
Particle Body Force (temperature update)	Set the specific heat capacity of the particle	N/A

 

Name

Description and Parameter Values

Temperature Update

Although not strictly a force, this built-in model allows the modeling of model external heat sources acting on the particles. It must be used with the Hertz-Mindlin with Heat Conduction contact model as it also completes the calculation of heat transfer between particles in contact. Set the specific heat capacity for each type of particle. The unit depends on the temperature unit; for example, the unit will be Jkg-1K-1 when the temperature unit is Kelvin.

Using the Temperature Update model

1. Select Particle-to-Particle from the Interaction menu in the Physics section of the Creator.
2. Click the + dropdown and then select Hertz-Mindlin with Heat Conduction.
3. Click the configuration icon to define the thermal conductivity for each particle type.
4. Select Particle Body Force from the Interaction menu.
5. Click the + dropdown and then select Temperature Update.
6. Click the configuration icon to define the specific heat capacity for each particle type.