| 1. | Numerical simulation of flutter for wings using the navier - stokes equations
方程的三维机翼颤振特性研究 |
| 2. | On comparing flutter characteristics of three supercritical airfoils in transonic flow
超临界翼型的跨声速颤振特性研究 |
| 3. | Also , the paper provides an analytical assessment of the flutter character of the vehicle model
本文还进行了该飞行器近似模型的颤振特性的解析估计。 |
| 4. | Finally , the 2d unsteady navier - stokes flow solver is coupled with two - degree - of - freedom flutter motion equation in time domain to investigate the flutter characteristics of several supercritical airfoils
最后，本文将二维非定常nayier - stokes方程解算器与颤振运动方程耦合，研究了超临界翼型的跨音速颤振特性。 |
| 5. | The aim of this thesis is to analyze the panel flutter mechanism and establish a mechanical model for panel flutter analysis and this work is the basis of panel flutter control studies
本文的目的就是对壁板的热颤振特性进行系统深入的分析和研究，为高速飞行器的壁板结构的防颤振设计和壁板颤振抑制的研究建立理论基础。 |
| 6. | Two kinds of actual blade were tested with this system . the analysis results are just the same as the practical operation . this shows that the numerical flutter analysis system is effective and can be used in the practical engineering problem
利用此系统对实际叶片的颤振特性进行了评估，得到了正确的结果，说明了本文的方法和所建立的系统正确有效，可望在工程实际问题中加以应用。 |
| 7. | The nonlinear panel flutter equations are also solved in time domain . the limit cycle flutter characteristics of nonlinear panel flutter are investigated and the effect of temperature and airflow speed on the nonlinear panel flutter characteristics is studied
通过对非线性壁板颤振方程的时域求解，研究了壁板的极限环颤振特性，得到了温度、气流速度等因素对非线性壁板颤振特性的影响规律。 |
| 8. | Accurate calculation of aircraft steady and unsteady aerodynamics and flutter characteristics , especially in the transonic speed range is a crucial problem for aircraft designers . it is very important for us to develop an efficient , accurate , robust navier - stokes / euler flow solver that could be used to study transonic steady and unsteady flowfields
飞行器的定常和非定常气动力的准确数值求解及颤振特性研究，特别是跨音速范围内的准确数值求解及研究，一直以来都是飞行器设计工作者必须面对的重要研究难题。 |
| 9. | At first , the finite element formulation is presented to determine the flutter characteristics of laminated panels at elevated temperature . then both the linear and nonlinear panel flutter characteristics are analyzed . the panel flutter boundaries are finally determined and the effect of temperature , airflow speed , etc , on the panel flutter characteristics is analyzed
为此，本文首先建立了复合材料壁板热颤振的有限元模型并对受热壁板的线性和非线性颤振特性进行了研究；最后确定了壁板的颤振边界，分析了温度、来流速度等因素对壁板颤振特性的影响规律。 |
