CAE Software【Femtet】Murata Software Co., Ltd.
General
The temperatures of the two bodies are equalized by radiation.
The temperature distribution and the heat flux vectors are solved.
Unless specified in the list below, the default conditions will be applied.
Item |
Settings |
Analysis Space |
3D |
Model unit |
m |
Item |
Settings |
Solvers |
Thermal Analysis [Watt] |
Analysis Type |
Transient analysis |
Options |
N/A |
The transient analysis is set up as follows. The total number of steps is 200. The time step is 30 second.
Therefore, the temperature distributions for 6000 seconds are solved.
Tab |
Setting Item |
Settings |
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Transient analysis |
Table |
|
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Initial Temperature |
25[deg] * |
* This setting is ignored because the initial temperature, which will be set later in each body attribute, is given priority over this setting.
Body Number/Type |
Body Attribute Name |
Material Name |
1/Solid |
VOL1 |
MAT1 |
4/Solid |
VOL2 |
MAT1 |
The initial temperature of each body is set as follows.
Body Attribute Name |
Tab |
Properties |
VOL1 |
Initial Temperature |
Specify on Each Body Attribute Initial Temperature : 100[deg] |
VOL2 |
Initial Temperature |
Specify on Each Body Attribute Initial Temperature : 0[deg] |
The material properties are set up as follows:
Material Name |
Tab |
Properties |
MAT1 |
Specific Heat |
0.8×10^3[J/kg/deg] |
Density |
1000[kg/m3] |
|
Thermal Conductivity |
8×10^1[W/m/deg] |
The outer boundary condition is set as adiabatic. Therefore this model is isolated thermally from the outer world. The radiation between VOL1 and VOL2 are set in the boundary conditions as follows.
Boundary Condition Name/Topology |
Tab |
Boundary Condition Type |
Settings |
RadFace3/Face |
Thermal |
Body-to-body radiation |
Radiation rate: 0.7 |
RadFace4/Face |
Thermal |
Body-to-body radiation |
Radiation rate: 0.5 |
The following graph shows the calculated time variation of the temperatures of VOL1 and VOL2.
The temperatures of the two bodies are converging gradually.