1. Reference problem

1.1. Geometry

Inner radius	\({R}_{i}=\mathrm{1m}\)
Outside radius	\({R}_{e}=\mathrm{2m}\)
Length	\(l\)

1.2. Material properties

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: label: EQ-None

lambda =1.0W/m°C

1.3. Boundary conditions and loads

• Imposed temperatures:

Inner surface:	\({T}_{i}=T(r={R}_{i})=20°C\)
Outer surface:	\({T}_{e}=T(r={R}_{e})=20°C\)

• Uniform power output \(Q=\mathrm{100W}/{m}^{3}\)

1.4. Initial conditions

Not applicable.