Physically, at a special critical wave speed the flow may have a naturally periodical separated-reattached pattern, with each wave trough capturing a stable vortex ring.
物理上看，在一个特定的临界行波速下会形成自发的周期性分离再附流，每个波谷的分离区捕获一个稳定的涡环。
The differential pressure signals of flow in a horizontal pipe are studied by wavelet analysis. The flow pattern can be recognized easily according to the characteristics of plug flow and wave flow.
采用小波变换分析水平管流上的压差信号，根据段塞流与波状流的小波分析特性，可容易地识别流型。
Based on the theory of two-phase flow pattern of gas and liquid, gas cut change can be detected with acoustic wave after gas flowing into wellbore.
基于气体侵入井眼后按气液两相流型分布的原理，利用声波可以早期检测到气侵。
After this flow pattern transformed into a flow pattern with thermal chocking at the combustion chamber exit and with a pseudo-shock wave developing in the inlet diffuser.
之后，在燃烧室出口出现热拥塞现象、在进气道扩压段产生伪激波流态。
Conclusion Ultrasound has a high value in evaluation of direction and wave pattern of portal vein flow, and has higher accuracy in detection of portal vein patency than ct.
结论超声可以对门静脉的血流方向和流速曲线作出准确评估，对门静脉的通畅性诊断价值优于CT。
By using the pressure deflection diagram, the flow structure for type 4 shock wave interaction pattern is analysed, and we explains why the surface pressure is very high in this case.
借助于激波极曲线，对第4类激波干扰结构进行了分析，解释了干扰引起物面压力增高的原因。
By using the pressure deflection diagram, the flow structure for type 4 shock wave interaction pattern is analysed, and we explains why the surface pressure is very high in this case.
借助于激波极曲线，对第4类激波干扰结构进行了分析，解释了干扰引起物面压力增高的原因。
应用推荐