Variable

Value

Atmospheric pressure $P_{\text{atm}}$ (Pa)

10⁵

Density under atmospheric pressure ${\rho }_{\text{atm}}$ (kg/m³)

0.668

${\nu }_0$ is kinematic viscosity of mixture at temperature $T_0$ (m²/s)

3.4 × 10⁻⁵

${\nu }_T$ is kinematic viscosity of mixture at temperature $T_4$ (m²/s)

1.14 × 10⁻⁴

$T_0$ is temperature of gas-liquid mixture in the entry, (˚C)

20

$T_2$ is water temperature in the seabed, (˚C)

5

$T_3$ is water temperature in the surface (˚C)

30

$T_4$ is the temperature of gas-liquid mixture at the end of the first area, (˚C)

20

$T_{\text{atm}}$ atmospheric temperature (˚C)

20

a is resistance factor (s⁻¹)

0.04

g is the free fall acceleration (m/s²)

9.8

R is the inner radius of the pipeline (m)

0.1524

Q is consumption (kg/s)

17.78

$l_1$ is the length of the first area of the pipeline, (m)

110

$l_2$ is the length of the second area of the pipeline, (m)

1000

$l_3$ is the length of the third area of the pipeline, (m)

107

$P_1$ is mixture pressure at the entrance (Pa)

1.6 × 10⁶