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天然气喷流
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  natural gas jet
     Research on compressed natural gas jet with MPI system
     MPI方式压缩天然气喷流的研究
短句来源
     Visualization of Natural Gas Jet Used in MPI System
     MPI燃料供给方式的天然气喷流可视化研究
短句来源
     At the end,the evolution process of natural gas jet in intake manifold was also numerically simulated for revealing the effect of natural gas injection on engine working process.
     最后数值模拟了进气歧管内天然气喷流的发展过程 ,探明了天然气喷射对发动机工作过程可能造成的影响
短句来源
     Calculating Model of Natural Gas Jet Used in MPI System
     MPI燃料供给方式的天然气喷流计算模型
短句来源
     The diameter of jet pipe, injection velocity, air flow velocity and the throttle opening had fundamental effects on the diffusion of the natural gas jet.
     喷管直径、喷射速度、空气流量和节气门开度对控制天然气喷流的扩散有重要影响。
短句来源
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  gas jet flow
     STUDY ON MECHANICS OF GAS JET FLOW AND BURNING BODY FOR LOSS-CONTROLLED WELLS
     失控着火井天然气喷流燃烧火体力学行为研究
短句来源
     After the physical model of gas jet flow and burning body is established for loss-controlled wells, the corresponding mathematical model can be developed to quantitatively describe the jet flow and burning body and the mechanics parameters of the response domain.
     在建立了失控井天然气喷流及燃烧火体物理模型后,可进而建立相应的数学模型以定量描述喷流、燃烧火体及其响应域的动力学参数。
短句来源
  “天然气喷流”译为未确定词的双语例句
     To verify the feasibility of non steady jet theoretical model of natural gas,a schlieren device was used to observe the starting and fully developed process of gas jet.
     使用纹影照相法观察了定容装置内从喷射阀喷出的天然气喷流的起动、发展过程。
短句来源
     The development process of gas jet injected from a natural gas injector is firstly analyzed using multi-dimensional numerical simulation method, which is proved feasible by the schlieren experimental results.
     首先采用多维数值模拟的方法解析了从天然气喷射阀喷出的突发天然气喷流的发展过程,并由纹影试验验证了这个数值解析方法的可行性。
短句来源
     By using the physical parameters of the formations gathered during drilling and geologic work, this paper has probed into models for predicting gush-out speed of the blowout in wellbores with different sizes and different configurations, so as to facilitate the planning and execution of blowout control procedures.
     文章利用地质、钻井过程获得的地层物性参数和气体动力学方程,探讨井喷失控井天然气喷流在不同井筒流动尺寸及组合的喷流速度预测模型,可应用薄剪切模型或RNG修正的k—ε模型定量描述速度场、温度场、浓度场分布。 为井喷失控井处理方案设计、施工作业提供基础数据。
短句来源
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  natural gas jet
The present study was focused on the turbulent velocity field of a central annular natural gas jet which penetrated a strongly swirling air flow.
      
  gas jet flow
Measurement of gas jet flow velocities using laser-induced electrostrictive gratings
      
Chaplygin's method [1] has been extended by Fal'kovich [2] to the case of several characteristic velocities; it has here been used to solve the two-dimensional unsymmetrical problem of subsonic gas jet flow around a plate near a solid wall.
      


With correction of Witze's calculating model for the effects of the jet density and the supersonic jet expanded outside the nozzle,equations for simultaneous estimation of the supersonic and transient natural gas jet characteristics have been developed in the paper.Moreover the velocity penetration and spray angle of jet were calculated in various nozzle radius.The transient natural gas jet extending process used in MPI system was also revealed.

将 Witze的亚音速非稳定空气喷流模型进行密度修正、超音速喷射引起的气体膨胀的影响等修正之后 ,建立了描述超音速非稳定天然气喷流发展过程的基础方程式 ,计算了不同喷孔直径的天然气喷流速度、贯穿距离以及喷射角 ,探明了 MPI方式的非稳定天然气喷流的发展过程

To verify the feasibility of non steady jet theoretical model of natural gas,a schlieren device was used to observe the starting and fully developed process of gas jet.The measurements processed with portrait processor show that the penetration of gas jet is proportional to the square root of time,this is very similar to the calculated results with the theoretical model,so non steady jet process of natural gas is revealed.

使用纹影照相法观察了定容装置内从喷射阀喷出的天然气喷流的起动、发展过程。经画像处理得到的测定值表明 ,天然气喷流的贯穿距离与喷射时间的平方根成正比。这与从理论模型得到的计算结果是相当一致的 ,由此探明了非稳定天然气喷流的发展过程

The developing process of the impulsively started natural gas jet was numerically simulated. The velocity fields, density fields were investigated. Investigations on the structure of the jet proved that the compression action of the potential vortex in downstream of the jet upon the jet flow accounted for the existing of the unsteady state region in the jet. And the shapes and tip penetrations of the natural gas jet obtained from the calculated mass distributions were in good agreement with the measurements...

The developing process of the impulsively started natural gas jet was numerically simulated. The velocity fields, density fields were investigated. Investigations on the structure of the jet proved that the compression action of the potential vortex in downstream of the jet upon the jet flow accounted for the existing of the unsteady state region in the jet. And the shapes and tip penetrations of the natural gas jet obtained from the calculated mass distributions were in good agreement with the measurements obtained experimentally using schlieren method.

突发天然气喷流的发展过程被数值模拟 ,考察了天然气喷流内部的速度场、密度场等 .表明了在喷流下流的势涡流对喷流体的挤压作用是产生喷流的非稳定区域的原因 .并且 ,由数值计算的天然气喷流的质量分布图得到的喷流形状和贯穿距离等与由纹影照相得到的实验结果是相当一致的 .

 
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