超同步旋转汽蚀和次同步旋转汽蚀是液体火箭发动机诱导轮旋转汽蚀现象的两种类型。为了揭示它们之间的差异,完成了Tsujimoto旋转汽蚀计算模型的理论求解,开展了旋转汽蚀现象的数值计算。结果表明,旋转汽蚀两种类型发生时,质量流量增益系数M都发生周期性变化。当超同步旋转汽蚀发生时,M>0;而当次同步旋转汽蚀发生时,M值的变化范围更广。由于在设计工况点附近,通常有M>0,因此在多数情况下很难观测到次同步旋转汽蚀。 Super synchrocirculation cavitation and subsynchronous cavitation are two types of rotating cavitation induced by liquid rocket engine. In order to reveal the difference between them, the theoretical calculation of Tsujimoto’s computational model of rotating cavitation is completed, and the numerical calculation of the phenomenon of rotating cavitation is carried out. The results show that the mass flow gain coefficient M periodically changes when both types of rotating cavitation occur. When super synchrotronic rotational cavitation occurs, M> 0; and when sub-synchronous rotational cavitation occurs, the value of M changes more widely. Due to the usual M> 0 around the design operating point, it is very difficult to observe subsynchronous spin cavitation in most cases.