Effect of Heaving Movement on Flow Instability in U-Tubes of Marine Steam Generator under Natural Circulation

Table 1

Parameters of marine steam generator U-tubes.

Name of parameter	Value of parameter
Inner diameter of U-tubes, m	𝑑0
Length of U-tubes, m	0.7𝑙0~ 𝑙0
Secondary side operating pressure of steam generator, MPa	3.0
Inlet fluid temperature, K	𝑇in
Outside diameter of U-tubes, m	𝑑1
Primary side operating pressure of steam generator, MPa	14.0
Mass flow rate, kg/s	0.006~0.06
Gravitational acceleration, m/s^2	9.8