Geometry:

Inner radius of the tube r_{i}

 mm

Outer radius of the tube r_{a}

 mm

Tube pitch of the membrane wall t_{}

 mm

Thickness of the fin s_{F}

 mm

Material properties:

Material name _{}



Design temperature T_{d}

 °C

Elasticity modulus E_{}

 N/mm²

Poisson's ratio ν_{}



Coefficient of thermal expansion β_{i}

 µm/m/K

Allowable stress S_{m}

 N/mm²

Loadings:

Inside pressure p_{i}

 bar

Temperature at the Point 1 θ_{1}

 °C

Temperature at the Point 2 θ_{2}

 °C

Temperature at the Point 3 θ_{3}

 °C

Temperature at the Point 4 θ_{4}

 °C

Temperature at the Point 5 θ_{5}

 °C

Temperature at the Point 6 θ_{6}

 °C

Temperature at the Point 7 θ_{7}

 °C

Temperature at the Point 8 θ_{8}

 °C

Temperature at the Point 9 θ_{9}

 °C

Temperature at the Point 10 θ_{10}

 °C

Additional external loads:

Additional longitudinal force q_{z}

 kN/m

Additional lateral force q_{x}

 kN/m

Additional bending moment m_{z}

 kN·m/m

Additional bending moment m_{x}

 kN·m/m

Special case – round membrane wall:

Radius of the membrane wall R_{w}

 mm

Inside gas overpressure p_{gas}

 bar

Pendant mass M_{w}

 kg
