论文部分内容阅读
采用准定常N-S方法,通过单独螺旋桨模型计算结果与非定常、试验结果的对比,验证了计算螺旋桨滑流的可行性。重点对带两台螺旋桨发动机的增升装置流场特性进行了计算分析,研究了螺旋桨滑流对飞机流场和气动性能的影响。研究结果表明:螺旋桨滑流明显改变了机翼表面的压力分布,使飞机升、阻力系数增大。为螺旋桨飞机设计提供了一种快速、有效的数值模拟手段,在工程领域具有一定的应用前景。
The quasi-steady N-S method is used to verify the feasibility of calculating the slipstream of a propeller by comparing the calculated and unsteady test results of a single propeller model. The flow field characteristics of the lifting device with two propeller engines are emphatically analyzed. The influence of the propeller slipstream on the flow field and the aerodynamic performance of the aircraft is studied. The results show that the propeller slipstream obviously changes the pressure distribution on the wing surface and increases the lift and drag coefficient. It provides a fast and effective numerical simulation method for propeller aircraft design and has certain application prospect in engineering field.