一、前言 旋转失速和喘振是压气机工作不稳定的两种典型性态。早在1955年Emmons等人已通过实验揭示了这两种不稳定工作的实质并提出了说明其机理的流动模型。但对这两种不稳定性态的相互关系没有进一步的揭露,长期以来停留在旋转失速是喘振的起源和先导这一假定上。本文倾向于翼型分离导致周向自激振荡和轴向自激振荡并发的论点,并提出了支持这种论点的流动模型。 First, the preface Rotation stall and surge are two typical characteristics of the unstable working of the compressor. As early as 1955, Emmons and others have experimentally revealed the essence of these two kinds of unstable work and proposed a flow model that explains its mechanism. However, there is no further disclosure of the interrelationship between these two instabilities and the long-standing assumption that spin-off is the origin and precursor of surge. This paper tends to the argument that the separation of the airfoils leads to the spontaneous oscillations in the circumferential direction and to the spontaneous oscillations in the axial direction, and proposes a flow model that supports this argument.