Hello all together,

i am trying to solve a fluid transport problem of a Testbody with the CEL Approach in Abaqus. I want the Testbody to be moved due to incoming fluid (with a speed of 15 m/s).

I was setting up a dynamic explicit simulation as shown in the picture below:

I tried different General Contact properties (All with self, Surface Pairs)

I defined an initial speed of the EUL instance so the acceleration of the fluid (LAG) should be no problem

I was testing different element sizes

Sometimes i was able to simulate the problem until the contact of the fluid with the Testbody and sometimes it aborted even earlier with different errors: Distorted Elementes in the EUL body, deformation speed to wave speed exceeds 1, ...

I will try to attach the INP or CAE file but atm its not working