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- Then the flow fields of scramjet combustor with fix geometry and isolator are simulated at different inflow Mach number and the influence of direction of injection fuel to flow structure are analyzed. 在此基础上对固定几何、带隔离段的双模态超燃冲压发动机在不同飞行马赫数下的流场进行了模拟,最后分析了不同的燃料喷射方向对燃烧室和隔离段流场的影响。
- however,the difference decrease to 2.6% when the inflow Mach number increases to Ma 8. 而当来流马赫数为8.;09时;侧板前掠的进气道流量系数仅高2
- inflow Mach number 进口马赫数
- Influence of Mach Number on Tornado Corner Flow Dynamics. 数对龙卷角流动力学的影响。
- The main flow is approximately dependent only on Mach number. 主流仍然近似地只同马赫数有关。
- It shows the indicated airspeed and the Mach number. 它显示了飞行速度和马赫数。
- The method for the unstart Mach number is described. 本文还提出了一种确定不起动马赫数的方法。
- An aircraft instrument that indicates speed in Mach numbers. 马赫表装于飞机上的一种以马赫数来显示速度的仪器
- On basis of the modeling results, the effects of Mach number, attack angle and ramp angle on the inlet performance are analyzed. 根据此数学模型,分析了攻角和进口气流马赫数对进气道性能的影响,同时给出了斜板对进气道性能的影响。
- The profiles of density, velocity, temperature, pressure and Mach number can be obtained by the computation. 通过计算可以得出密度、速度、温度、压力和马赫数的分布。
- The Mach number in the outlet of the choke is calculated,and the flowage can be decided. 计算出口处的马赫数的值,判别节流嘴内的流态,进而逆向求节流嘴上游的各参数。
- Effective Mach number control of cruise missile in large airspace is an urgent problem to he solved. 摘要在大空域内实现对于飞航导弹巡航马赫数的有效控制是一个迫切需要解决的问题。
- Another method to increase the pressure ratio prec/p is to increase the temperature and Mach number of the eject gas. 提高引射气体的温度及马赫数,也可增加扩压比。
- For the further supersonic range, performance losses increase slightly with increasing Mach number. 在继续的超声速范围内,性能损失随外流马赫数增加只有小幅增长。
- For subsonic free stream, performance losses almost linearly increase with increasing Mach number. 低马赫数亚声速外流时,性能损失随外流马赫数的增加成近似线性增加;
- And this investigation has predicted the possibility of bending flutter at high subsonic inlet Mach number and low negative incidence. 本研究还预测到在高亚音进口M数,低负攻角条件下出现弯曲颤振的可能。
- In order to apply the central scheme to higher Mach number flows, the sensor about pressure or temperature aremodified with some TVD-like properties. 为适应较高马赫数计算,对人工粘性中的压力(温度)感测因子进行改进,使其具有类TVD性质,并有效地抑制不真实的数值振荡,拓展了中心格式的适用范围,使格式更具鲁棒性。
- When a missile crosses a oblique shock wave (OSW) moving in the same direction,its flying Mach number and angle of attack will change very much. 当物体以超声速穿越同向运动的斜激波时 ,它的飞行 Mach数和攻角都会发生较大的变化。
- In transonic flow, a simple empirical formulation is given to predict the wave drag of upswept aftbody, which extends the usable range of Mach number. 在跨音速范围,给出了一种简 单的上翘后体波阻的估算方法,拓宽了马赫数的适用范围。
- It's observed that the ejector start pressure goes up with the increasing of the ejecting Mach number and the mixing-room contraction ratio. 试验结果表明,环型引射器启动压强明显高于运行压强;试验发现,引射马赫数越高,混合室收缩比越大,引射器启动压强越高。