CFD Self Propulsion Simulations


CFD Self Propulsion Simulations

When you need accurate data on propulsion power requirements of your ship design, our CFD self propulsion simulations are the closest you will get to them, except for runing physical experiments. This allows you to lead a more efficient design process and have more confidence moving forward with the hull design.

The interaction between the hull and propeller/s is essential when it comes to the total powering requirements, and needs to be taken into account. Self-propulsion CFD simulations allow having them both in a single numerical model enables this interaction to be correctly calculated, which is the approach used in our simulations.

The streamlined workflow process we developed for self-propulsion simulations enables us to deliver results within a few days, enabling you to quickly assess and reassess your design.

The numerical model takes into account the two-way interaction between the propeller and the hull, where the hull changes the inflow velocity profile to the propeller, while the propeller accelerates the flow, and changes the pressure field, affecting the pressure distribution along the hull.

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Don't hesitate to contact us if you would like more information about our CFD Self Propulsion simulation service.

Or email us at info@cloudtowingtank.com

CFD Self propulsion simulation model

The approach used for self-propulsion CFD simulations in our company uses the actuator disc model to represent the action of the propeller.

The actuator disc is used to impose a pressure jump and accelerate the flow, mimicking the action of the propeller; and at the same time serve as the sampling disc for the inflow velocity, which is a crucial input for assessing the power delivered to the propeller. The approach simplifies the propeller and makes these simulations useful for the dynamic process of vessel design.

What data do you get from our CFD self propulsion simulations?

Our CFD Self Propulsion Simulations give you the essential data of the hull-propeller system. These include:

  • Propeller thrust, torque and rotation rate;
  • Thrust power,
  • Delivered propeller power,
  • Resistance of individual hull parts,
  • Dynamic sinkage and trim of the vessel.

The CFD model allows us to separate individual hull parts and let you know how much power your rudders, skegs, structs and other appendages are spending. For example, often the rudders placed in the jet of the propeller consume more power than you expect. Make sure you know exactly what costs you power so that you can improve the design.

Maneuvering Simulations Using the Overset Grid Technology in foam-extend. 

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CFD Validation and Grid Sensitivity Studies of Full Scale Ship Self Propulsion 

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Fully Automated Ship Resistance Prediction using the Naval Hydro Pack

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Maneuvering Simulations Using the Overset Grid Technology in foam-extend. 

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CFD Validation and Grid Sensitivity Studies of Full Scale Ship Self Propulsion 

DOWNLOAD PAPER


Fully Automated Ship Resistance Prediction using the Naval Hydro Pack

DOWNLOAD PAPER

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