扩压的英文

• diffusing action

• 扩    expand; enlarge; extend
• 压    press; push down; hold down; ...
• 扩压泵    diffuser casing pump
• 扩压段    diffuser
• 扩压管    diffuser
• 扩压器    diffuser recovery; diffusor
• 泵扩压段    pumdiffuser
• 超声扩压器    supersonic diffuser
• 环形扩压段    annular diffuser
• 环形扩压器    annular diffuser
• 简单扩压器    simple diffuser
• 进口扩压器    inlet diffuser
• 径向扩压器    radial diffuser
• 绝热扩压器    adiabatic diffuser
• 可扩压的    diffusible
• 扩压管（圆锥管）    diffuser(conical duct)
• 扩压管唇部    diffuser lip
• 扩压器（导轮）    diffuser(guide wheel)
• 扩压器进口    diffuser entry; diffuser intake
• 扩压器入口    diffuser inlet
• 扩压器损失    diffuser loss
• 扩压器效率    diffuser efficiency
• 扩压器性能    diffuser perfomance
• 扩压器叶栅    diffuser grid
• 扩压式汽阀    diffusing type steam valve

• The flow field of fadw is very complicated , especially in the free vortex jet zone . so the method is according to the ideal flow , including the design of the asymmetric supersonic laval nozzle and the diffuser
  所以，本文所建立的fadw的基本设计方法是理想状态下的设计方法，其中主要包括非对称超音速喷管的设计和气动窗口扩压器的设计方法。
• By the multiple objective optimization , the diffusion angle of the ventilator volutes with high efficiency , low noise and high total pressure of the ventilators was calculated and selected according to the experimental data
  摘要根据实验数据，采用多目标最优化的方法，对效率高、噪声小、全压大等性能指标皆好的通风机蜗壳扩压角进行了理论计算选择。
• The result shows that multiple inlet is better than single inlet , and that inlet with buffer is better than that without buffer . other optimal design structures are also adopted . the gas manifold with optimal structure make oxygen much evener for each cell
  结果表明多进口比单进口，有)比无隔板、扩压型进口比非扩压型进口、椭圆台进口比圆台进口的进气箱结构更易实现电池堆中每个单电池进气量的均匀化。
• Finally , the two dimensional flow in the diffuser is calculated , the results show that the change of ma makes an effect to the performance of the diffuser . owing to the accretion of ma , the action of oblique shock waves and the boundary layer pricks up , the flow separates from the wall where the shock waves impinge on the boundary layer more quickly , the cluster of diamond shock waves becomes larger . moreover , by comparing the change of flow field under different structure parameter , it is found that the augment of length of constant area section alter the structure of fluid field little , a smaller area ratio and larger angle of compression section make the diffuser working better
  最后,针对扩压器中的二维流场进行了数值模拟,结果表明马赫数对扩压器性能影响较大,随着马赫数的增大,扩压器管道内激波-附面层干扰加剧,流动从附面层分离相应加剧,激波串数目增多;通过比较不同结构参数下的扩压器内流场,发现等直段长度的变化几乎没有改变流场结构,只是对局部流场稍有影响,并且在其它参数不变的情况下,一定范围内减小面积比a2 / a1和增大收缩角有利于扩压器性能的提高。
• The investigation shows the performance gets quite insensitive to the prewhirl angle of igv as the stagger angle of diffuser vane is reduced to the minimum 7 ; the combination of these two stators enables to greatly improve the compressor efficiency over the entire operating rage , the maximum efficiency with the combined adjustment reaches 86 . 0 % , higher than that in alone adjustment of igv or diffuser vanes by 2 %
  研究表明：扩压器进口安装角最小值为7时，压缩机性能对进口导叶预旋角不敏感；采用不同的扩压器进口安装角和不同进口导叶预旋角匹配调节时，压缩机所能达到的最高效率为86 . 0 % ，比单独调节进口导叶预旋角或扩压器进口安装角所能达到的效率高2 % 。
• After that , the one - stage prs is connected with the chemical laser system to test cooperation of the two systems . tests show that the ejecting capacity of the one - stage prs is unable to fulfil the exhaust requkement of the chemical laser system , and that the starting process of the cavity and the diffuser is not thorough and the cavity pressure is too high , with the power output of the laser decreasing sharply . then , based on the achievements of the one - stage prs , a " subsonic - supersonic " two - stage prs is developed and a lot of tests are made
  随后，开展了单级引射prs系统与df化学激光器的联试研究工作，通过大量的联试实验，研究了激光器配方、引射器引射能力、联试时序和扩压器方案等等，对扩压器和光腔的启动特性、光腔压强和出光功率的影响，得出了光腔压强过低、单级引射prs系统无法满足其压缩比要求，需考虑采用两级引射prs系统的结论。
• By using this two - stage prs in the united test , the power output of the laser reach the output level when exhausting into vacuum tank . finally , the optimal design of the multi - module diffuser is discussed through numerical simulation . and the optimal scheme of the multi - module difiuser is found out
  最后，针对单模块prs系统向多模块prs系统移植时遇到的多模块扩压器的扩压分流问题，应用数值方法探讨了超声速扩压分流弯曲管道的优化设计问题，得到了较优化的多模块扩压器设计方案。
• In the aerodynamic optimization design of turbomachine , the approximation model methods enable to balance the computational cost and accuracy , whose successful applications in centrifugal compressor impeller , diffuser , and mixed - flow pump impeller designs are introduced to show a wide engineering foreground
  基于统计学理论提出的近似模型方法有效地平衡了基于计算流体动力学分析的叶轮机械气动优化设计中计算成本和计算精度这一对矛盾，在离心压气机叶片扩压器、叶轮和混流泵叶轮设计等问题中得到了成功应用，展示了广阔的工程应用前景。
• The results attained are as follows . on account of the strongly coupling character of parameters which have an effect on scramjet performance , the approximate evaluation models of scramjet inlet diffusion performance and the ignition problem in direct - connected experiments are established by neural network methodology
  针对发动机性能影响因素强烈耦合的特点,采用bpnn和rbnn神经网络方法,分别建立了超燃冲压发动机进气道扩压性能和直连式发动机点火性能的神经网络近似评估模型,得到了很好的逼近效果和预测能力。
• This paper studies the diffuser ' s influence on the fadw ' s running properties experimentally including the inner wall and outer wall of diffuser and the backpressure of the diffuser . to prevent the gas of fadw from leaking into the laser cavity because of the effect of layer and turbulence the leak - proof flakes are designed . first the method of the leak - proof flake design is studied and then its influence on the properties of fadw is studied experimentally
  实验研究了扩压器对fadw工作性能的影响，提出了扩压器结构和超音速喷管相对布局参考数据；研究了气动窗口侧壁防漏片的结构对气动窗口性能的影响，并给出其工程设计方法；同时还研究了扩压器不同的背压对整个fadw作性能的影响，据此提出了扩压器与引射器结合的设计方案，从而为大压比、高性能的fadw的设计提供了进一步设计参考方法。