超声速

This paper deals with two dimensional supersonic and hypersonic flow problem by solving the two dimensional Navier-Stokes equation.

董葳本文通过求解Navier-Stokes方程，解决二维超声速及高超声速流动问题。

Thus it was extensively applied to experimental research of transonic and hypersonic flow.

因此，它在跨声速和超声速流的实验研究中得以广泛地应用。

On the basis of these results, the relations of total-pressure recovery coefficient or flow coefficient and flight mach number, angle of attack and the second movable wedge angle of the inlet have been founded by hypersurface fitting, then the mathematical model of the inlet is established.

根据流场计算结果并利用超曲面拟合方法建立了进气道总压恢复系数、流量系数与飞行马赫数、进气道攻角及二级可调斜板角度之间的关系，由此得到了二元混压式超声速进气道数学模型。

Secondly, supersonic combustion research is reviewed. Then, investigation for scramjet engine model is summarized.

其次是超声速燃烧方面的研究及模型超燃冲压发动机研究。

Numerical experiments,including supersonic flow,subsonic flow and low speed flow,show that the al...

验证算例包括超声速、亚声速以及极低速情形的化学反应流场，计算结果表明基于预处理AUSM+格式发展的算法能够有效地用于全速域范围内化学反应流动问题的模拟。

With the bell-type soliton movement in supersonic speed and the kink-type soliton movement in subsonic speed the two types of the soliton bound states appear to situate at the bottom and the top of the exciton energy band respectively.

对Bell一型孤子以亚声速＜运动，而Kink一型孤子以超声速运动，它们分别出现在激子能带底部和顶部。

The results show that for a supersonic shear layer without reaction, a disturbance can make the shear layer become unstable, this results in one vortex or more than one vortex. The combination and seperation of vortex can intensify the mixing. But it is not easy for supersonic reacting shear layer with exotherm to become unstable with disturbance, and the effect duration is very long.

结果表明，对完全气体的超声速剪切层流动，一定的激励方式能使原先较为稳定的剪切层流动变得不稳定，产生单涡或多涡结构，发生多涡间的合并，使混合加剧；但对于存在放热现象的反应超声速剪切层流动，外加激励方式不易使流动从稳定变为不稳定，而且外加扰动的作用特征时间也较长，实际应用前景不乐观。

The results for the distributions of species, temperature, pressure and other parameters are obtained. In addition, the mixing process of atomized kerosene injected transversely into the supersonic flow with hydrogen pilot flame has also been calculated.

本文还对具有氢引导火焰的煤油雾化颗粒在超声速气流中的混合流场进行了的数值模拟，为进一步的两相超燃的数值模拟打下了基础。

In view that the combustion efficiency and flame stability are affected by the interaction of flow and combustion, further systematical research on phenomena and mechanism of the interaction between flow and combustion in supersonic combustors is needed.

由于流动与燃烧的相互作用直接影响超声速燃烧室中的燃烧效率与燃烧稳定性，因此有必要对超声速燃烧室中流动与燃烧的相互作用现象及其机理进一步开展系统深入的研究工作。

The structure of supersonic combustion flow field was analyzed. The effects of temperature and equivalent ratio of supersonic premixed flow on the structure of supersonic combustion flow field, ignition and flame propagation were studied.

采用普通的纹影系统实现了高温超声速燃烧流场显示；对超声速燃烧流场结构作出了分析；研究了超声速预混可燃气的温度以及当量比对超声速燃烧流场结构、点火与火焰传播特性的影响。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。