目前，国内外对水利工程中无压流到有压流过渡段水流的研究主要集中在泵站前池的流场问题。
Present research on transition section from non-pressure flow to pressure flow focuses on the water of Pumping Station forebay.
在相同叶轮出口速度下，叶片扩压器比无叶扩压器中气流速度下降迅速，叶轮出口处平均流场趋于均匀。
Under the same impeller outlet speed, the flow speed of blade diffuser is faster than the vaneless one. The average flow field at impeller outlet trends to uniform.
分别对冷态条件下，无隙锥形旋流器燃烧室前扩压器内流场的分叉现象以及燃烧室内燃烧空间的流场分叉现象进行了数值模拟计算。
The numerical simulations of bifurcation phenomena in a combustor with a non slot conical swirler and in a diffuser fixed before the non slot conical swirler have been carried out.
数值结果表明，施加自适应无源被动控制后，分离区长度减小为无控制时的45%，控制区域的总压恢复系数和流场均匀性提高。
The numerical results show that with the adaptive passive control, the separation bubble length was reduced to 45% of its original length, and the low total pressure recovery coefficient was improved.
长距离无压引水隧洞水气两相流的研究对于引水工程过流能力及运行安全具有重要的理论意义及指导作用。
The study of water-air two-phase flow in long-distance free flow tunnel is of great significance to the conveyance capacity and operation safety of water diversion project.
保护功能有三段过电流保护、反时限过流保护、三相一次检无压自动重合闸等。
The protection functions include three-section over-current protection, inverse-time over-current protection, three-phase one-shot no-voltage auto-recloser and so on.
根据川西南威远气田大水量气井现场测试数据，建立了举升油管和油套环空气液两相流压降优化模型。将油管内的持液率模化为气相、液相无因次速度和液相无因次粘度的函数；
An optimal model is proposed for predicting the pressure drop of two-phase flow in gas well tubing and annulus, based on the measured data from the gas field of southwest Sichuan, China.
根据川西南威远气田大水量气井现场测试数据，建立了举升油管和油套环空气液两相流压降优化模型。将油管内的持液率模化为气相、液相无因次速度和液相无因次粘度的函数；
An optimal model is proposed for predicting the pressure drop of two-phase flow in gas well tubing and annulus, based on the measured data from the gas field of southwest Sichuan, China.
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