| Abstract: | The problem of subsonic unsteady ideal-gas flow over two annular blade rows of thin lightly loaded blades rotating one relative to the other is solved within the framework of linear small perturbation theory. As in the case of the interaction of two-dimensional cascades [1], the problem reduces to an infinite system of singular integral equations for the harmonic components of the oscillations in the distribution of the unknown aerodynamic load on one blade of each row. The system of integral equations for a finite number of harmonics is solved numerically by the collocation method. The kernels of the integral equations are regularized on the basis of the method proposed in [2].Translated from Izvestiya Akademii Nauk.SSSR, Mekhanika Zhidkosti i Gaza, No. 3, pp. 165–174, May–June, 1991.The author is grateful to A. A. Osipov and K. K. Butenko for their considerable assistance in the preparation of this paper. |
