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Propeller: highly non-orthogonal and skewed mesh
Problem description
Flow through a propeller.
Physics and modelling
This problem uses a mesh that is generated by distorting cells downstream of the propeller. The result is a mesh with over                                                                  70o \special {t4ht= non-orthogonality and severe skewness. The problem incorporates centrifugal and Coriolis terms to simulate the spinning of the propeller and uses RANS turbulence modelling. The numerics are tuned to resolve the pressure vortices from the propeller tips using non-orthogonal and skewness correction.
Images
The image shows an isosurface of constant vorticity.
Author
Simulation by Nabla Ltd..
Vorticity from a propeller
Propeller vorticity