In the tank case, the bulging of the nozzle create rotation of the nozzle so double gimbal or universal with 2 horizontal tie-rod can absorb this along with the lateral displacement from settlement.
An EJ placed perpendicular to the nozzle will be subject to torsion due to bulging so in my opinion is not very good.
In any case try to model the nozzle with flexibilities.

If bulging is not a problem, maybe a support tied with the tank foundation would be acceptable.

Regards