Turbomachine with variable stator

摘要

A variable stator of a turbomachine with a profile skeleton line extending along a meridional flow line, with the stator being radially divided into at least three zones (Z 0 , Z 1 , Z 2 ) and with the respective radial inner and the radial outer profile skeleton line of each zone (Z 0 , Z 1 , Z 2 ) being designed such that it satisfies the following equations: ${\mathrm{alpha}}^{*}=\frac{{\mathrm{alpha}}_1-{\mathrm{alpha}}_P}{{\mathrm{alpha}}_1-{\mathrm{alpha}}_2}$ $S^{*}=\frac{S_P}{S}$ where: P is any point of the profile skeleton line, alpha₁ is the angle of inclination at the stator leading edge, alpha₂ is the angle of inclination at the stator trailing edge, alpha* is the dimensionless, specific angle of the total curvature, S* is the dimensionless, specific extension, alpha_P is the angle of the tangent at any point P of the profile skeleton line to the central meridional flow line, s_P is the extension of the profile skeleton line at any point P, and S is the total extension of the profile skeleton line.