压气机

Grasp how state properties changes along adiabatic, isothermal and polytropical compression process and how to calculation the work consumption of compressor

掌握不同压缩过程状态参数的变化规律、耗功的计算，以及压气机耗功的计算

But still more work is needed on advanced adjustable cascade with higher turning angle and higher mach number.

这一性能水平同下一代发动机/压气机的技术性能指标要求相比仍存在一定差距。

Current adjustable blade application in military aero-engine was discussed and the further development trend was predicted. High load, high mach number, broad flow angle range, and low flow loss level will be pursued.

根据航空军用发动机/压气机的发展趋势预测，可调叶片技术将在高负荷、高流动马赫数、宽调节范围、低流动损失4项指标上进一步提高。

A flow field diagnosis system has been established which includes the diagnosis of meridional flow field and detail blade-to-blade calculation.

为了进一步给出流场细节，用诊断出的级间参数作为边界条件，对需要详细诊断的叶栅平面进行S〓流场计算，提供更详尽的理论分析和修正的依据，完善压气机试验调试技术。

The optimization approach have high efficiency, and can provide a ordered flow field for compressor.

该方法不仅在数学和物理上使得优化进程高效的收敛于最优解，而且能给后续的压气机级提供一个组织有序的流场。

Impeller overspeed craft is compressor impeller produces a medium kind of important method.

梗概： 叶轮超速工艺是压气机叶轮制造中的一种重要方法。

Piston-engined aircraft and turboprops have air compressors to maintain cabin pressure.

活塞发动机和涡桨发动机的飞机有压气机来控制客舱的压强。

A test model of four co-rotating disks was developed as the simplified version of a typical internal cooling system of a gas turbine compressor. The investigation was on the distribution of local heat transfer coefficient and the averaged nusselt number of the downstream main disk. Experimental analysis may lead to following conclusions: the distribution is not of monotony and multi-peaks were found along the disk surface,Nu increases with the decrease of the rotational reynold number Re(subscript w,Nu increases with the axial reynold number and the grasholf number.

针对航空发动机多级压气机盘腔的冷却问题，对具有轴向通流的三腔模型进行了系统的研究，通过对局部换热特性与平均换热特性的分析，可以表征旋转盘的热应力水平和相对冷却效果，结果表明表征旋转盘热应力水平的局部换热特性在旋转盘的半径上呈多峰分布，表征相对冷却效果的平均换热特性与旋转雷诺数Re、进气雷诺数Re以及格拉晓夫数Gr有关，当Re及Gr增加时，平均努塞尔数Nu随之增加，而Re的增加使之减小。

The main difficulties of SPIV measuremnts in turbomachines such as the laser light reflection and the dispersion of tracer particles were properly resolved in the experiment, and the instantaneous velocity distributions of several cross sections in the blade tip region were successfully measured at the design and near stall conditions, respectively.

在压气机SPIV测量中，激光反光的控制和示踪粒子的均匀稳定散播是决定成败的关键因素。

According to instantaneous velocity fields and vorticity fields measured with SPIV, detailed analysis of the evolution of tip leakage vortex at both design and near stall conditions is presented in this thesis and the different phases of the evolution of the tip leakage vortex, the formation, becoming unstable and the interaction between small-scale vortices and the mainstream can be clearly observed in the experiment results.

SPIV测量结果表明压气机转子叶尖泄漏涡在设计和近失速状态下均存在形成、发展壮大和失稳分裂的演化过程。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。