多而大的涡流区延迟了扰动的混合过程。
Numerous and extensive eddy cavities retard the turbulent mixing process.
发生事故的主要原因之一是过热器、再热器进口集箱引入三通处蒸汽在集箱中复杂流动工况下产生涡流，处在涡流区的管屏蒸汽流量减少，使汽温和金属壁温升高。
The main source of these failures are vortices existing, in front of Tee-Junctions of entering headers of superheaters and reheaters, caused by the complex flow conditions in the headers.
试验结果表明，发动机在高、低速区的最佳进气涡流强度是不同的。
Results show that there are different optimum swirls in different ranges of diesel engine operating condition.
在高速区降低进气涡流强度，发动机的性能和排放均有明显改善。
The performances of diesel engine are improved by higher swirl in the operating range of low speed and high load.
试验结果表明，发动机在高、低速区的最佳进气涡流强度是不同的。
The effects of different intake swirl ratio on the performances and exhaust emissions of diesel engine were investigated based on the experiment data.
研究了线性涡流制动的特性方程，在低速区和高速区分别推导出特性曲线方程。
The paper studies the braking characteristic formula of linear eddy current brakes, and characteristic formula is respectively derived in low speed zone and high speed zone.
航空喷气发动机燃烧室中广泛采用叶片涡流器来控制火焰筒的一次空气流量，并建立强回流区。
The blade-type swirlers have been used in many air engine combustors to control the primary airflow of flame tube and establish a strong recirculation zone.
用热线风速仪测量了常规层燃炉炉膛和带有偶极子涡流器的炉膛模型拱区的三维速度场。
In this paper, the 3 D velocity fields in the furnaces' arch area for a conventional stock boiler and the model with dipole vortex device were measured by the hot wire aerometer.
用热线风速仪测量了常规层燃炉炉膛和带有偶极子涡流器的炉膛模型拱区的三维速度场。
In this paper, the 3 D velocity fields in the furnaces' arch area for a conventional stock boiler and the model with dipole vortex device were measured by the hot wire aerometer.
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