任意形状の振動翼列に働く非定常空気力に関する研究 : 第1報,二次元非圧縮翼列

概要

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Unsteady flow calculations for two-dimensional cascades in incompressible flow are performed as a first step toward solving the three-dimensional oscillating cascade problem. A potential flow is assumed and unsteady formulation is based on the small perturbation approach. The governing equations are discretized by FEM. C-type grids are used which are generated numerically. The calculations are performed for isolated blades and cascaded blades as well. The behavior of steady pressure distribution around the leading edge, the treatment of second derivatives of steady velocity potential on blade surface and those effects on unsteady pressure distribution are examined. A parametric study is conducted to find the effects of reduced frequency, interblade phase angle, blade camber angle and blade thickness on unsteady aerodynamic characteristics of translationally oscillating cascades.
一般社団法人日本機械学会の論文
1989-01-25