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ISO 10211:2007 Thermal bridges in building construction. Test case A.4 validation

QuickField validation of the test case A.4 presented in ISO 10211:2007 Thermal bridges in building construction.

Problem Type:
3D problem of heat transfer.

Geometry:

EN ISO 10211:2007 test case 4
all length units are in millimeters.

Given:
Thermal conductivity of insulation λ1 = 0.1 W/K·m.
Thermal conductivity of metal λ2 = 50 W/K·m.

Problem:
The metal bar penetrates the insulation wall. Determine the flux and the thermal coupling coefficients.

Solution:
Air contact surface thermal resistance Rs is caused by the convection. The convection coefficient value is reciprocal to the surface resistance value:
α = 1 / Rs [W/(K·m2)].

Results:
Temperature distribution in media:

EN ISO 10211:2007 test case 4 heat flux

QuickField

Reference

%%

Temperature

0.801°C

0.805°C

0.004°C

Heat flux

0.543 W

0.54 W

1%

To comply with the ISO 10211:2007 the difference between calculated and reference heat flux should be less than 1% (0.005°C - for temperature). This simulation accuracy complies with the requirements of ISO 10211:2007.

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There are no restrictions applied to the QuickField Student Edition postprocessors.
You can view field maps, make plots, calculate integrals and print pictures in the same way that the Professional Edition users do.

*ISO 10211:2007(en) Thermal bridges in building construction - Heat flows and surface temperatures - Detailed calculations.