EfficiencyCorrection¶

class sharpy.generators.polaraeroforces.EfficiencyCorrection[source]¶

The efficiency and constant terms are introduced by means of the array airfoil_efficiency in the aero.h5

\[\mathbf{f}_{struct}^B &=\]

arepsilon^f_0 mathbf{f}_{i,struct}^B + arepsilon^f_1

mathbf{m}_{struct}^B &=

arepsilon^m_0 mathbf{m}_{i,struct}^B + arepsilon^m_1

Notice that the moment correction is applied on top of the force correction. As a consequence, the aerodynamic moments generated by the forces on the vertices are corrected sequentially by both efficiencies.

See Also:
The SHARPy case files documentation for a detailed overview on how to include the airfoil efficiencies.

Returns:
np.ndarray: corresponding aerodynamic force at the structural node from the force and moment at a grid vertex

generate(**params)[source]¶

Keyword Arguments

aero_kstep (sharpy.utils.datastructures.AeroTimeStepInfo) – Current aerodynamic substep
structural_kstep (sharpy.utils.datastructures.StructTimeStepInfo) – Current structural substep
struct_forces (np.array) – Array with the aerodynamic forces mapped on the structure in the B frame of reference

Returns

New corrected structural forces

Return type

np.array