| 1. | 4 . the external flow field of the 3d model was simulated and the characteristic about it was described simply
4 、对三维模型进行外流场的数值模拟,简要分析外流场的分布特点。 |
| 2. | At different attack angles , mach numbers and ramp angles , the numerical calculations of inner and external flow field are performed for an adjustable mixed compression inlet
摘要对某可调混压进气道在不同攻角、不同马赫数、不同斜板角度下进行了大量的数值计算。 |
| 3. | 3 . the external flow field of the automobile model was simulated at speed 60m / s , 70m / s and 80m / s . the conclusion is that the characteristic about the external flow field of the automobile model distributes similarly
3 、对汽车在60m / s 、 70m / s和80m / s速度下的外流场情况进行数值模拟和分析,得出高速时的外流场分布特性。 |
| 4. | The numerical simulations show the complete airflow pattern around the tested car . this external flow is very complicated because of the geometric complexity of the car body shape and the interaction of the car with the ground
计算值与文献值在汽车的前部是重合且一致的，而在汽车顶部却出现了一些偏差，两者的压力系数曲线走势是基本一致的。 |
| 5. | Finite differential method ( fdm ) was applied to analyze the external flow field by fluent and calculate the drag coefficient , and the result of the external flow field by changing the shape of automobile model can be compared
采用有限差分法,运用fluent软件,分析某轿车模型附近的流场,计算出阻力系的数值,研究车身前部改进对汽车外流场的影响。 |
| 6. | Abstract : drawing on each other " s merits , the algebraic grid generation and elliptic grid generation methods are closely combined to generate high quality grids of automobile external flow field effectively
文摘:将代数网格生成法和椭圆方程网格生成法有机地结合起来，克服了它们各自的弱点，集中了它们的优点，可快速有效地生成高质量的汽车外流场计算网格。 |
| 7. | The ejected coolant interacts with the external flow near the endwall and generates aerodynamic and thermodynamic losses in the process . this reduces turbine stage efficiency and together with the consumption of cooling air is detrimental to the overall cycle efficiency
但这种方法中喷射的冷空气与端壁附近的外流场相互作用产生气动力和热动力损失，并且消耗冷却空气，从而损害涡轮的整体循环效率。 |
| 8. | Considering multiplicity of automobile model style , more research about the external flow field of the automobile model by choosing different collocation and changing the detail about the foreside of automobile body was carried out
2 、考虑到车头形式的多样性,选择汽车车头的不同布置和相关细节变化。将汽车车头模型在虚拟流场中进行外流场的数值模拟,进一步进行分析研究,得到不同车头形式所具有的各自特点。 |
| 9. | ( 2 ) to evaluate the effects of a reaction control jet on the aerodynamic performance of a missile operating at supersonic / hypersonic flight condition , the single and two attitude jet - interaction flow between a lateral jet and the external flow has been analyzed by detailed numerical simulation
( 2 )分别计算了单喷流和双喷流干扰流场。详细分析了流场结构和弹体表面压力分布特性，获得了一些有实用价值的结果。 |
| 10. | This paper refers the figures and dates of some missiles in domestic and foreign , builds the aerodynamic date , engineer and rudders mathematic model , analyses the phenomenon of side jet interaction with external flow , builds a side jet model with append factor which conforms to the actual situation , and founds nonlinear mathematic model of this missile
本文参考了国内外各型导弹的形状和数据,建立了导弹空气动力和力矩模型、发动机模型和作动器模型,并且研究了在侧喷直接力控制时,侧喷与外流场的干扰效应,建立了更加符合实际情况的带有附加增益的侧喷模型。 |
