| 1. | These separating flows exert tension on the ceiling . 这两股分开的气流对天花板施加一个压力。 |
| 2. | The numerical method of unsteady airload for separated flow around any bodies 非流线体分离流动态载荷的数值模拟方法研究 |
| 3. | Simulation of separated flows for the nrel airfoil using anisotropic two - equation turbulence models 非线性双方程湍流模型用于翼型分离流动模拟 |
| 4. | The result shows that the pressure distribution on the cylinder and the wake are modified , and the separate flow partially is attached to the surface again 相邻微作动器存在相位差时,圆柱上下表面压力系数的差值发生改变,进而使绕流圆柱的气动性能发生变化。 |
| 5. | For the first time the complex separated flow in the aft - end zone was measured using pdpa technology . the whole mean and fluctuating flow field were obtained 利用pdpa测速技术首次对燃烧室尾部的复杂分离流动进行了测量,获得了完整的时均速度和湍流脉动定量数据。 |
| 6. | By using a reynolds - averaged two - dimensional computation , the effect of upstream wake on unsteady separated flow field of downstream adjacent vanes was investigated in low - speed axial compressor 摘要利用二维数值模拟研究了低速轴流压气机上游尾迹对下游相邻叶排的非定常分离流场的影响。 |
| 7. | All models can predict the attached and little separation flows . for the high angle - of - attack separated flows with distinct history effects , the j - k and k - g models perform better than b - l model . for multi - body and multi - block mesh system , model k - g , which does not need the distance normal - to - wall , performs much better adaptability for complex geometries 所有模型都可以很好地模拟附体及和小分离流动;对于具有明显上游历程效应的大迎角分离流动, j一k和k - s模型的模拟能力较强;对于多体干扰和多块网格系统, k - s模型无需计算网格单元至物面的垂直距离,具有较强的适应能力,且计算效果最佳。 |
| 8. | The effect of reynolds number on rudder hydrodynamic performance is also analyzed . up to the stall angle the computed lift and drag agree well with measurements and other author ' s calculations , whereas stall angle , lift and drag beyond the stall angle are slightly under - predicted . the solver is used to investigate laminar and turbulent separated flows around a 6 : 1 prolate spheroid at high incidence angles and their effects on hydrodynamic forces 应用所开发的求解器,以naca0015翼型舵为算例计算了船舵在不同雷诺武汉理三;大学博士学位论文数下大舵角范围内的三维粘性流场及水动力,成功地预报了舵的失速角和最大升力,并初步探讨了雷诺数对舵水动力的影响;计算结果与现有试验和计算数据比较,吻合程度相当好,初步检验和验证了该求解器精确模拟粘性流动和计算水动力的能力。 |
| 9. | The effects of reynolds number , back surface of nozzle , aft - dome configuration and degree of submergence on aft - end internal flow were studied by both cold gas simulation and numerical simulation . it is showed that the separated flow is sensitive to the change of reynolds number and aft - end cavity configuration 最后,利用冷流模拟与数值模拟相结合的方法,研究了雷诺数、喷管背壁形状、后封头形状和潜入深度对燃烧室尾部流场的影响,结果表明流动的分离对雷诺数和背壁区几何边界的变化很敏感。 |
| 10. | The velocity distributions , the relative mach number distributions and the flow trace distributions are visualized , and the reasons , which cause bad aerodynamic losses and make the flowfield complicated , are analyzed , including wake , secondary flow , separated flow and the interaction between shock and boundary layer 显示压气机内的速度场、相对马赫数分布及流动迹线分布等,并分析造成严重损失及使流场趋于复杂紊乱的原因,包括尾迹、二次流、分离流及激波/附面层干扰等现象。 |