Particles move in a steady state

ShadiShadi
in DualSPHysics v5.2

Dear DualSPHysics users,

I am currently simulating a tsunami case , however, I am facing an issue where the fluid becomes unstable and the particles expand in the STL file before reaching the objects to the fluid .

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dp is 5m and I tries coefsound value=500, 200 and 100

I would greatly appreciate any suggestions or ideas to address this matter.

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