Issue in Liquid Volume Fraction When Coupling Rocky with Fluent

[youssef.badran]

Hello,

An issue in the liquid volume fraction is observed when coupling Rocky with Fluent 2025R2.

The liquid mass is conserved. Simulation parameters:

• Fluid time step: 0.001 s

• Particle time step: 0.0006 s

• Particle diameter: 0.05 m

• Entire domain and boundaries rotate

Results and mesh are attached below. Could you please advise on possible causes of this issue in the water volume fraction ?

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