Hertz Mindlin with Heat Conduction
EDEM API Programming DEM Solutions Page 1 of 2
Hertz Mindlin with Heat Conduction
For dilute phase simulations, convective heat transfer is dominant and conductions between the particles or
wall can be neglected. However, for dense phase, contacts between particles are significant such that
conductive heat transfer must be taken into account. The inter-particle heat transfer model was originally
suggested by Chaudhuri, Muzzio, & Tomassone (2006).
The heat flux between the particles is written as:
where the contact area is incorporated in the heat transfer coefficient hc and is given by:
where F
N
is the normal force, r
*
the geometric mean of the particles radii from the Hertz’s elastic contact
theory and E
*
is the effective Young’s modulus for the two particles. The bracketed term on the RHS of the
equation models the contact area between particles.
Temperature Update
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.
Use
1. The File Location for Contact Models must be set to the correct location
