Stresses in long multilayer hollow cylinders
under consideration of pressure, convection and heat radiation
Signature:
Title:
Remarks:
Date:
General data and border conditions:
Name
Value
Unit
Inner radius
mm
Inside
Convection temperature
°C
Heat transfer coefficient
W/m²/K
Fouling factor
m²K/kW
Heat flux
kW/m²
Radiation temperature
°C
Radiation coefficient
1
)
Pressure
bar
Outside
Convection temperature
°C
Heat transfer coefficient
W/m²/K
Fouling factor
m²K/kW
Heat flux
kW/m²
Radiation temperature
°C
Radiation coefficient
1
)
Pressure
bar
End of cylinder
free without cap force
free with cap force
clamped
Additional axial force
kN
1
) the coefficient
C
12
of the Stefan-Boltzman equation:
q
=
C
12
·
σ
· (
T
1
4
−
T
2
4
)
Layers properties:
Layers 1 — 4
Layers 5 — 8
Layers 9 — 12
Name
Layer 1
(innermost)
Layer 2
Layer 3
Layer 4
Unit
Layer name
Layer thickness
mm
Layer material
Norm title for
λ
Heat conductivity
λ
W/m/K
Norm title for
E
Moduli of elasticity
E
MPa
Norm title for
α
Thermal expansion
α
1/K
Norm title for
μ
Poisson´s ratio
μ
Name
Layer 5
Layer 6
Layer 7
Layer 8
Unit
Layer name
Layer thickness
mm
Layer material
Norm title for
λ
Heat conductivity
λ
W/m/K
Norm title for
E
Moduli of elasticity
E
MPa
Norm title for
α
Thermal expansion
α
1/K
Norm title for
μ
Poisson´s ratio
μ
Name
Layer 9
Layer 10
Layer 11
Layer 12
Unit
Layer name
Layer thickness
mm
Layer material
Norm title for
λ
Heat conductivity
λ
W/m/K
Norm title for
E
Moduli of elasticity
E
MPa
Norm title for
α
Thermal expansion
α
1/K
Norm title for
μ
Poisson´s ratio
μ