再生冷却

Regenerative cooling is the most widely used method of cooling a combustion chamber and is accomplished by flowing high-velocity coolant over the back side of the chamber hot gas wall to convectively cool the hot gas liner.

再生冷却是最广泛使用的方法冷却燃烧室和是通过流动的高冷却速度超过回到会议厅一侧的热气体墙convectively冷却热气体班轮。

Although regeneratively cooled combustion chambers have proven to be the best approach for cooling large liquid rocket engines, other methods of cooling have also been successfully used for cooling thrust chamber assemblies.

虽然再生冷却燃烧室已被证明是最好的办法冷却的大型液体火箭发动机，其他方法冷却，也被成功地用于冷却推力室集会。

In the first chapter ,the thermal environment of scramjet and the inevitablility of regeneratively cooled scramjet,the history and state of art of the studies on regeneratively cooled scramjet an

本文第一章介绍了超燃冲压发动机燃烧室热环境和对发动机燃烧室采取再生冷却的必要性，研究了超燃冲压发动机再生冷却技术的发展和现状，并介绍了本文的研究内容。

In the first chapter ,the thermal environment of scramjet and the inevitablility of regeneratively cooled scramjet,the history and state of art of the studies on regeneratively cooled scramjet and regenerative cooling technology were described comprehensively.

本文第一章介绍了超燃冲压发动机燃烧室热环境和对发动机燃烧室采取再生冷却的必要性，研究了超燃冲压发动机再生冷却技术的发展和现状，并介绍了本文的研究内容。

In order to investigate the basic heat transfer characteristics of the platelet regeneratively cooled thrust chamber, the second chapter focussed on the developed flow and heat transfer in the long straight regenerative cooling channels with rectangular sections.

为了解层板再生冷却推力室在传热上的基本特征，第二章重点研究流动和热充分发展的矩形截面长、直再生冷却通道内的传热问题，建立了层板再生冷却推力室二维流固耦合传热过程的数理模型，采用通用形式控制方程描述冷却剂紊流传热和通道材料内导热的共轭传热问题，从而避免了流-固区域之间的反复迭代，大大缩短了计算时间。

Through this material one could setup an overall impression of the study content and the study method.In order to investigate the basic heat transfer characteristics of regeneratively cooled scramjet, in the second chapter, one dimensional heat transfer model of regeneratively cooled scramjet was developed. In this model, N-R correlations were used to describe hot gas-side and coolant-side convection heat transfer. Simple model of gas properties was also used.

为了初步了解超燃冲压发动机再生冷却传热的基本特征，第二章建立了超燃冲压发动机再生冷却的一维传热数理模型，采用了准则关系式描述燃气侧和冷却剂侧的对流换热，采用了简化的燃气物性模型，并对衬层材料、衬层厚度和冷却剂流量进行了参数研究。

The internal regenerative cooling is a new cooling technique of the thrust chamber.

一、内部再生冷却的物理描述内部再生冷却是一种新的推力室冷却技术。

As the chamber pressure increases, the only cooling methods that can satisfy the requirements are regenerative cooling only or regenerative cooling combined with film cooling.

作为商会的压力增加，只有冷却方法能够满足要求，再生冷却的唯一或再生冷却结合膜冷却。

It was the first time that experimental studies of the flow characteristics and convective heat transfer in platelet regenerative cooling channels with high aspect ratio were conducted in China.

大高宽比再生冷却套在宽度上已属于微小通道，为考察其流动传热是否与常规尺度管道不同，本文理论分析采用经典N-S方程而未考虑微小尺度效应是否合理，研究流道高宽比等几何参数对其水力和对流换热特性的影响，分别搭建了挤压式水力实验台和泵压式对流换热实验台，设计了d〓=1.0~1.2mm，宽度为0.6~0.8mm，AR=3~15的5个不同高宽比矩形通道层板试验件，采用线切割加工槽道和扩散焊接盖板的制造工艺，得到了质量可靠的试验件，以水为工质，在国内首次对大高宽比层板再生冷却通道的流动和对流换热特性进行了实验研究。

The study shows that regenerative cooling can meet the airframe/engine integrated cooling requirements in the range of flight Mach numbers from 6 to 12, as fuel injection concept (injector locations and injection fuel mass flow) is set properly, and hydrogen temperature at the exit of cooling passage is allowed to be a relative higher value.

研究表明，在马赫数6～12的范围内，通过适当配置燃料喷射方案和提高冷却通道出口冷却剂的温度，采用再生冷却方式能够满足机体／发动机一体化高超声速飞行器的冷却需求。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷