[Madushanka]

I am simulating an ROV ducted propeller (underwater) to study thrust force behaviour with the changing duct angle.

There is a significant discrepancy between the experimental thrust force and the results obtained from our computational fluid dynamics (CFD) simulations for the T200 thruster. Our experimental data, based on the technical details provided by Blue Robotics, indicates an expected thrust force of approximately 14.5 N at 1900 rpm.

However, our CFD simulations yielded a significantly lower thrust force of approximately 5.7 N.

Simulation details,

Ansys CFX was used.

I created two domains, stationary and rotary. I used a steady state with a frozen rotor approach.

Inlet velocity is zero. wall and outlet were set as openings. k-epsilon model was used.

1)What may be the reason for this deviation?

2)Are my boundary conditions correct for this type of application?

Thank you.