Furthermore, the fan blade was stacked renewedly. And then, the influence of blade sweepforward, sweepback and bend on the cascade flutter was discussion.
本文还在三维风扇叶片的基础上对叶片重新积叠，讨论了叶片前掠、后掠以及弯曲对颤振特性的影响。
In the prediction for the blade stall flut〓er of the steam turbine last stage, the large scale separation near end wall at small volumtric flow rate has the effect on predicting results of the flutter.
在蒸汽轮机末级长叶片的失速颤振预测中，末级流场在小容积流量下端壁的大尺度分离对于预测结果肯定有较大影响。
Therefore, in the research of turbomachinery aeroelastics, it is more and more important to predict blade flutter and to avoid blade flutter.
所以，预报颤振发生几率，避免叶片颤振的研究工作在叶轮机械气动弹性力学学科中占有越来越突出的地位。
The results show that the efficiency of cascade would be more or less improved by the blade sweepforward, sweepback and bend, but the influence of them on the cascade flutter is various.
通过计算结果可以看出，前掠、后掠与弯曲或多或少可以提高叶栅的效率，但对颤振特性的影响却各有不同。
So, the correct prediction of the blade flutter is very important in the design and modification of the turbomachine.
本文运用计算流体力学方法，成功地进行了二维和三维振动叶栅非定常粘性流动数值模拟。
With the advent of fiber-glass reinforced blade and due to the existence of back lash in rotor control system, it is necessary to study the flutter of a nonlinear structure.
随着玻璃钢桨叶的发展，以及旋翼操纵线系间隙的存在，就有必要研究这种非线性弹性结构的颤振分析方法。
The numerical flutter analysis system was formed by the three-dimensional numerical simulation of the vibrating cascade flow combined with the structural dynamics analysis of vibrating blade.
将振动叶栅三维流动数值模拟与振动叶片结构动力学分析相结合，建立了叶片颤振数值分析系统。
Effect of blade mistuning and blade - disk on cascade flutter boundaries
叶片失调及盘片耦合对叶栅颤振边界的影响
A semi-actuator disk method for predicting the blade stall flutter
预测叶片失速颤振的一种半激盘法
A deformed actuator disk model for predicting the blade stall flutter is one of the most practical enginnering method, but its deficiency lies in the neglect of the unsteady flow inside the blade passage.
变形激盘法是预测叶片失速颤振的实用工程方法之一，其不足之处是忽略了叶片槽道内的非定常流动。
The eigenvalue method is presented for determining the effects of blade mistiming (mistiming amplitude, mistuning order) and centrifugal effects on cascades flutter boundaries in incompressible flow.
本文用特征值法研究了不可压流中叶片频率失调阶次及离心力效应对叶橱弯、扭耦合非失速颤振边界的影响。
The main cause for such failure was the high varying stress from the blade flutter because of its relatively small flutter margins.
叶片颤振裕度不大，在工作转速范围内产生颤振导致叶片承受较大的动应力是其疲劳断裂的主要原因。
Flutter process is observed and relationship between wall pressure response on top of blade tip and vibrating response of the blade is analyzed.
本文对平板叶栅进行气动弹性稳定性试验研究，观察到颤振过程，分析了叶片颤振时叶尖上方壁面处压力脉动与叶片振动之间的关系。
Through the computation and analysis of unsteady aerodynamic forces loading on the cascades and aerodynamic work, the probability of blade flutter is predicted through the energy method.
通过对叶片表面非定常气动力及其所做非定常气动功的计算分析，采用能量法对叶片颤振与否进行预估判断。
One of the practical method for predicting the stall flutter of the blade of a turbomachinery is a semi-empirical one (deformed actuator disk method). The reliability and simplicity of this method have been verified by the authors.
本文利用一种半经验方法&变形半激盘法预测了轴流压气机（风扇）的亚/跨音速失速颤振。
By applying energy method to flutter analysis, it is shown that the effect of neighboring blade rows interaction is destabilizing, but, blade row aeroelastic stability can also be enhanced by properly adjusting the blade row relative axial position.
对稳定性问题，能量法分析结果说明叶片排干涉使叶片更易失稳，但适当调整叶片相对轴向位置有可能提高叶片气动弹性稳定性。
The application of casing treatment to the control of blade flutter may have advantages particularly compared with the existing methods of suppressing blade flutter.
应用壁面处理控制叶片颤振与其他方法相比有其特殊优势，但由于加入软壁面特别是有限长的壁面处理，给求解方法带来很多困难。
This paper also presents the experimental results of effects of the blade tip clearance and the airfoil shape on the stall flutter boundary.
此外还给出了两种叶尖间隙和两种叶型对失速颤振影响的实验结果。
The eigenvalue method is presented for determining the effects of blade mistuning and blade-disk on cascade flutter boundaries in incompressible flow. The falling leaf spiralled to the ground.
本文用特征值法研完了叶片频率失调及盘片耦合对叶栅颤振边界的影响。落叶盘旋着飘到了地上。
Analysis of blade flutter in a mistuned rotor
错频叶片转子的稳定性分析