.obj from Abaqus and Fluid/Obstacle

Hi,
I’m trying to drop a model that was created in Abaqus.
I export it as .obj from Abaqus and import to Blender.
But when trying to apply physics to it (Fluid -> Obstacle) I do not have this option.

Is there any workaround for this?

Krish

But when trying to apply physics to it (Fluid -> Obstacle) I do not have this option.
So what options do you have.
Please supply appropriate screenshots and blend files

Is there any workaround for this?
Maybe there is if you supply the above.

Have you tried doing an STL export instead?

Sorry for extreme late reply.
But changing the file format worked.

Thanks Nucleophobe.