| 1. | Its discovery engendered the "sudden freezing" approximation for relaxing nozzle flows .
这一事实的发现导致了松驰喷管流动“突然冻结”的近似概念。 |
| 2. | Numerical simulation of plug nozzle flow field
塞式喷管流场数值模拟 |
| 3. | Nozzle flow characteristic
喷嘴流通特性 |
| 4. | The nozzle flow is composed of the main gas stream and the secondary air stream in order to simulate the nozzle of turbofan engine
喷管中的气流由主流燃气和次流空气组成，用以模拟涡扇发动机的喷管。 |
| 5. | The calculation results are compared with experimental data , and the good agreement shows that the methods described here are practical and efficient in nozzle flow calculation
两者吻合较好，说明本文所述方法在喷管流场计算方面是一种实用、有效的方法。 |
| 6. | Through the analysis of the configuration of scramjet nozzle flow field , some design methods of scramjet nozzle and the characteristics of its performance variation were found
通过对流场结构和喷管性能的分析,得出了一些超燃冲压发动机喷管设计方法和喷管性能变化的规律。 |
| 7. | Three typical nozzle flow fields are calculated by using the method based on unstructured grid system and finite volume scheme , which are developed in this dissertation
采用本文所发展的这种基于非结构网格的euler方程有限体积算法，对3个典型算例进行了数值计算，并将计算结果与实验结果进行了对比。 |
| 8. | Firstly , the mechanism of self - excited oscillation was introduced . when the water jets from the inlet nozzle flows into the chamber , the momentum exchange between the jet and the liquid in the chamber occurs , thus to form an unstable shearing layer with certain thickness
这是一种崭新的强化换热技术，流体脉动能够造成换热器全程的换热强化，而且自激振荡脉冲射流强化换热技术本身是一种无功强化的方法，无需输入外部能量来产生扰动。 |
| 9. | The calculated results of cold nozzle flow are in agreement with some cold test one . through calculation , the parameter distributions of regulated nozzle flows were obtained . they state that the design of the regulated nozzle is reasonable , and its velocity loss at discharge section is less than 2 . 3 % comparison with no regulated nozzle
3 、计算结果与已有的试验结果对比相符，计算获得了可调喷管的流场参数分布，表明可调喷管的设计合理，与不可调喷管相比，流动的出口平均速度损失小于2 . 3 。 |
| 10. | In the aero - optical flow field tomography measurements , all projection data of different direction must be simultaneous . and the laser nozzle flow field up - stream and down - stream strehl ratio simultaneous measurements have the synchronicity requirement . the working environment of high power laser is rigorous and complicated
在考虑了由于气动光学流场层析测量中的多个投影方向数据的同时测量、激光器喷管流场上游和下游同时测量的同步要求,以及高能激光平台的复杂环境多方面因素的基础上,考虑了硬件匹配的一些问题,设计了一套高速的线阵s - h传感器。 |
