On Unsteady Aerodynamic Forces and Moments of Radial Impeller Blades

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概要

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• By method of singularities, the theoretical treatments of two-dimensional centrifugal impeller blades vibrating harmonically with the arbitrary frequencies and the phases are described for the forces and the moments under the assumptions of an incompressible, inviscid, nonstalled flow. Some computed results on the case of radial impeller blades are presented. The results show that the aerodynamic damping forces and moments about rotational axis vary significantly near the integer values of the ratio of vibrating frequency to rotational speed, so that the instability of single degree of freedom becomes possible at the frequencies depending upon the vibrating phase angle.

著者

• Nishioka Kiyoshi

  National Defense Academy

• MITSUNAKA Yoshitaka

  National Defense Academy

関連論文

• On Unsteady Aerodynamic Forces and Moments of Radial Impeller Blades

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