The flow characteristics of slush hydrogen in horizontal pipes are investigated numerically using 3D Euler-Euler model. The pressure drops obtained by the numerical calculation are compared with experimental results from the open literature

in order to validate the numerical method. In addition

the models with proper parameters are adopted to simulate the flow of slush hydrogen with different volume fractions (10%

20%

30%) and flow rates (1.0 m·s-1

2.0 m·s-1

3.0 m·s-1) in horizontal pipes with different diameters (10 mm

16.6 mm

23 mm). The volume fraction distributions of slush hydrogen in the pipe are obtained. It is found that the solid volume fraction distribution of slush hydrogen is more heterogeneous at lower flow rate

lower average volume fraction and larger pipe diameter.