Unstructured mesh was used in 3-D numerical simulation to simulate the influence of secondary nozzle on performance of rocket ejector, ejecting ability and mixing condition. 应用非结构网格技术对引射火箭的流动进行了三维湍流数值模拟,分析了二次喷管对引射火箭总体性能、引射能力和混合状况的影响。
Technical notes a preliminary experimental study on aerodynamic charateristics in ejector with curved mixing duct 弯曲混合管引射系统气动特性实验研究
The flow field of the ejector shows the effects of the section of the mixing chamber on the performance of the ejector. 喷射器内流场直观地显示了混合室截面大小对喷射器性能的影响过程。
The study of gas-liquid ejector, which is used in the ejector expansion refrigeration cycle, is carried out. A numerical simulation is employed to discuss the mechanisms and the characteristics of the two-phase flow field in the mixing section emphatically. 本文针对应用于喷射式制冷循环中的气液喷射器进行分析研究,通过使用数值模拟的方法着重对混合室内部气、液两相流场的分布和特点进行探讨。
The ejector with a lobed nozzle is of high efficiency in pumping and mixing. 波瓣喷管引射器具有高效的引射掺混特性。
The multihole nozzle ejector has lower noise and higher entrainment performance than the reference ejector at the ratios of medium and short mixing length. 最佳引射性能的多孔喷管引射器与参考引射器相比,在具有中等和较短混合室长度比时,不仅噪声可显著降低且引射性能亦可得到提高。
The ejector ratio begins to drop when the working pressure was high because of the shock in the mixing chamber. 工作压力过高会在混合室内产生壅塞,反而降低喷射因数;
The main researches of this thesis are as follows: 1. Analyze the thermodynamic process on the ejector. A constant pressure mixing model for ejector is established by the aerodynamics method. 2. 本文围绕带喷射器的CO2热泵热水器系统展开研究,主要内容如下:1、对喷射器的工作原理进行热力学分析,以等压混合理论为基础,应用气体动力学原理建立了喷射器的一维计算模型。
Exhaust ejector system is composed of exhaust primary nozzle and ejecting mixing duct. 排气引射系统主要由二个部件组成,即引射主管与排气混合管。
First, we carried the ejector and mixing principle of nozzle in new gas turbine combustor design, and AITFC ( Air Injection Temperature Flameless Combustion) was proposed. 首先,我们将喷管引射混合原理引入了燃气轮机新型燃烧室设计,提出了基于入射空气温度的无焰燃烧技术AITFC(AirInjectionTemperatureFlamelessCombustion)。
By calculation, the main dimensions of the two phase ejector such as the throat sectional area of the primary flow nozzle and mixing chamber have been defined. 并且通过计算得到了主蒸汽喷嘴和混合室喉部截面积等主要尺寸。