Numerical Simulation of Size Effects on Countercurrent Flow Limitation in PWR Hot Leg Models

Table 2

Test section dimensions and experimental and simulation conditions.

Reference	D (m)	𝐿𝐻/D (−)	𝐿𝐼/D (−)	θ (deg)	Fluids	Pressure (MPa)
Experiments
Ohnuki et al. [7]	0.0254	9.06	1.18	50	Air-water	0.1
Simulations
Present study	0.0254	8.40	1.20	50	Air-water	0.1
Minami et al. [5]	0.05	8.40	1.20	50	Air-water	0.1
Kinoshita et al. [6]	0.75	8.40	1.20	50	Air-water and steam-water	0.1

D: diameter, 𝐿_𝐻: length of horizontal pipe, 𝐿_𝐼: length of inclined pipe, θ: angle of elbow.