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Full Modelling:

The numerical simulation of a rotating propeller geometry entails a high computational cost. This is for two reasons: the mesh density increases considerably, over and above that of the airframe, when modelling propeller blades and the numerical simulation of rotating blades requires an unsteady calculation.

Nevertheless, not all studies require the same level of fidelity. The ARA Computational Aerodynamics Applied team offers a range of possibilities to model propellers according to the customer or application needs: from low-fidelity codes to different high-fidelity CFD advanced techniques used in the aerospace industry.

complexity 

 Strip

 ActuatorDisc

 FullModelling

Strip

Actuator disk

Full modelling

For detailed high-fidelity propeller modelling, the ARA computational aerodynamics team have
the capability, using the Solar–TAU RANS toolset, to perform an unsteady (URANS)
numerical simulation of the full modelled rotating blades.

This level of modelling allows the detailed analysis of the propeller performance and
time-dependant interaction effects of the propeller on the airframe and vice versa. The
co-existing static airframe and rotating propeller meshes interface by means of the use of
the overset unstructured grids method (Chimera).

FullModellingflow