Thermal Conductivity #

The thermal conduction calculation can give you

1. effective thermal conductivity of the system
2. temperature distribution
3. heat flux density distribution

Solved Equation #

$\nabla \cdot q = 0$, where $q = k \nabla T$

• q Heat flux density
• $k$ Thermal conductivity
• T Temperature

Input options #

The following options are needed for the thermal conductivity calculation.

• input->system The choice of calculation system must be thermal
• input->external->temperatureGradient External applied temperature gradient (K/m), if you want to calculate the temperature distribution within the composite
  • x Applied temperature gradient along x
  • y Applied temperature gradient along y
  • z Applied temperature gradient along z
• input->solver->ref A property tensor for the reference phase called thermal_conductivity is needed. Tensor definition is explained [here]

<system>
    <type>thermal</type>
    <external>
        <temperatureGradient>
            <x>0</x>
            <y>0</y>
            <z>2e7</z>
        </temperatureGradient>
    </external>
    <solver>
        <ref>
            <name>thermal_conductivity</name>
            <rank>2</rank>
            <pointGroup>custom</pointGroup>
            <component>
                <value>100</value>
                <index>11</index>
                <index>22</index>
                <index>33</index>
            </component>
        </ref>
    </solver>
</system>

Output files #

There are a total of 4 possible output files for the dielectric calculation

1. effThermalConductivity.dat
2. avThermalFlux.dat
3. temperat.00000000.dat
4. tempGrad.00000000.dat
5. heatFlux.00000000.dat