Today, solve one of the NAFEMS Benchmark tests for thermal analysis using COMSOL.
(ref : A.D. Cameron, J.A. Casey, and G.B. Simpson, NAFEMS Benchmark Tests for Thermal Analyes. NAFEMS Documentation)
The problem definition is as follow.

The geometry has a height of
In Model Wizard - 2D - Heat Transfer - Heat Transfer in Solids - Add - Study
Stationary - Done
Geometry
Rectangle
Width : 0.6
Boundaries - Temperature
Select the bottom boundary
Boundaries - Heat Flux
Select the right and top boundaries
Flux type : Convective heat flux
Heat Transfer in Solids(ht) - Solid 1
Thermal Conductivity(
Mesh
Right click Mesh1 and choose Mapped - Build All

Study - Compute

To check the temperature at (0.6, 0.2), a Point Evaluation needs to be performed.
Result toolbar - Cut Point 2D
x : 0.6
y : 0.2
REsult toolbar - Point Evaluation
Data set : Cut Point 2D 1
Expression : T
Unit : degC
Evaluate


As a result, the temperature was found to be 18.265C.
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