Heat Fluxexamples|products|Murata Software Co., Ltd.

Example13 Heat Flux

General

  • Two rods with different thermal conductivities are placed closely and subjected to the common “heat flux” boundary condition.
     

  • The temperature distribution and the heat flux vectors are solved.
     

  • Unless specified in the list below, the default conditions will be applied.
     

 

Analysis Space

Item

Settings

Analysis Space

3D

Model unit

mm

 

Analysis Conditions

Item

Settings

Solver

Thermal Analysis [Watt]

Analysis Type

Steady-state analysis

Options

N/A

 

Tab

Setting Item

Settings

Mesh Tab

Meshing Control

Select Place middle nodes on the curve

to make smooth cylinders.

 

Model

Two cylindrical solid bodies are created. One is copper and the other is nickel. Their thermal conductivities are different.

The “heat flux” and “temperature” boundary conditions are set on the top and bottom faces respectively.

Body Attributes and Materials

Body Number/Type

Body Attribute Name

Material Name

0/Solid

ROD

008_Cu *

1/Solid

ROD

010_Ni *

* Available from the Material DB

 

Boundary Conditions

Boundary Condition Name/Topology

Tab

Boundary Condition Type

Settings

25degree/Face

Thermal

Temperature

25[deg]

HeatFlux/Face

Thermal

Heat flux

100000[W/m2]

* The positive value means the heat flux directs inward.

Results

The temperature distribution is shown below.

The temperature difference between the top and bottom faces is higher with Ni than Cu.

 

The vectors of the heat flux are shown below.

 

When the heat flux is the same, the temperature gradient is steeper with lower conductive material.