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internal recirculation
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  “internal recirculation”译为未确定词的双语例句
    Internal Recirculation of Particles in CFB Boiler and its Application
    CFB颗粒物料的炉内再循环及其实践
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    The results of calculation and experiment show that the axial velocity profile has negative velocity in the internal recirculation zone, the tangential velocity profile possesses the feature of Rankin vortex.
    计算和试验结果表明在旋转流场的轴向方 向产生了回流区,切向方向具有强制涡与自由涡相结合的Rankin涡结构。
短句来源
    The measurements show that, the diameter of the internal recirculation zone (IRZ) reduces under the structure of central gear baffle, and the related reversed ratio increases by 20 percent.
    分析测量结果可见 ,齿型中心扩口下中心回流区直径减小 ,相对回流率较普通型中心扩口增加 2 0 % .
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  internal recirculation
The system performance could be slightly improved by 10% when applying internal recirculation.
      
The effect of media configuration and internal recirculation on the system performance was studied.
      
There existed an obvious external recirculation zone with axial length less than 1.0 m and a narrow internal recirculation region was observed in the entrance of gasifier inlet.
      
In October, 1970, a 35-tonne bulk of potato tubers cv.Pentland Crown, containing samples of cvsKing Edward andRedskin, was fumigated with 2-aminobutane in a bin store fitted for internal recirculation of air.
      
Use of a short rotary kiln with a cyclone preheater allowed the internal recirculation of volatile constituents, essentially consisting of compounds of potassium, chlorine and sulphur.
      
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n this paper, the concept of the radial bias combustion (RBC)swirl pulverized coal burner is introduced, and during the boiler outage and in service, the experiments have been done in a 410t/h coal fired boiler, which shows the effects of the non-swirl secondary air ratio on the burner's aerodynamic characteristics. We get the relation between the non-swirl secondary air ratio and the flow parameters, such as the flow divergent angle, the length and diameter of the internal recirculation zone and the...

n this paper, the concept of the radial bias combustion (RBC)swirl pulverized coal burner is introduced, and during the boiler outage and in service, the experiments have been done in a 410t/h coal fired boiler, which shows the effects of the non-swirl secondary air ratio on the burner's aerodynamic characteristics. We get the relation between the non-swirl secondary air ratio and the flow parameters, such as the flow divergent angle, the length and diameter of the internal recirculation zone and the mixing characteristics, and the influence on the burner advantages of high combustion efficiency, flame stability, low NOx emission and resistance to slagging, high temperature Corrosion.

本文阐述了径向浓淡旋流煤粉燃烧器的基本原理,通过在一台410t/h的锅炉上的冷态、热态实验,研究了直流二次风率对燃烧器空气动力特性的影响,得出了直流二次风率与射流的扩展角、中心回流区直径及长度、一、二次风混合的关系,以及对燃烧器高效、稳燃、低污染、防结渣及防高温腐蚀性能的影响.

K-ε-Kp model is adopted to numerically simulate the gas-particle two phase flow of a pulverized coal burner. The results of calculation and experiment show that the axial velocity profile has negative velocity in the internal recirculation zone, the tangential velocity profile possesses the feature of Rankin vortex. The comparison of prediction with experiments show that the K-ε-Kp model is very good agree to those measured in quantitatively and qualitatively. All of these specify that K-ε-Kp model can...

K-ε-Kp model is adopted to numerically simulate the gas-particle two phase flow of a pulverized coal burner. The results of calculation and experiment show that the axial velocity profile has negative velocity in the internal recirculation zone, the tangential velocity profile possesses the feature of Rankin vortex. The comparison of prediction with experiments show that the K-ε-Kp model is very good agree to those measured in quantitatively and qualitatively. All of these specify that K-ε-Kp model can be used for engineering, but needed to be further improved.

用K—ε—Kp气固两相湍流模型模拟了煤粉燃烧器出口区域的气固两相旋转 流场,并将计算结果与试验结果做了详细的比较。计算和试验结果表明在旋转流场的轴向方 向产生了回流区,切向方向具有强制涡与自由涡相结合的Rankin涡结构。K-ε-K p模型预报的气固两相速度场与试验相比在定量上和定性上是合理的。结果表明,K-ε- Kp模型已具有一定的工程应用价值,但还需进一步的改进。

The aerodynamic properties of swirling jet coming out from the swirl burner were studied with the structures of a central gear baffle and an ordinary baffle on a cold model test rig of Radial Bias Combustion (RBC) burner using the rotating hot film probing method to measure the mean velocities, turbulent stresses, skewness coefficient of isothermal swirling jet. The measurements show that, the diameter of the internal recirculation zone (IRZ) reduces under the structure of central gear baffle, and the...

The aerodynamic properties of swirling jet coming out from the swirl burner were studied with the structures of a central gear baffle and an ordinary baffle on a cold model test rig of Radial Bias Combustion (RBC) burner using the rotating hot film probing method to measure the mean velocities, turbulent stresses, skewness coefficient of isothermal swirling jet. The measurements show that, the diameter of the internal recirculation zone (IRZ) reduces under the structure of central gear baffle, and the related reversed ratio increases by 20 percent. The turbulent fluctuation intensity also increases at the boundary of IRZ near the gear central baffle. The turbulent normal stresses double while turbulent shear stresses triple. The probability density function of the mean stream instantaneous velocity approaches a Gauss distribution faster. Because the increase of reversed flow and turbulent fluctuation intensity in the exit swirling jet of RBC burner, the process of pulverized coal combustion can be enhanced by the structure of gear baffle.

采用一维热膜探针多方位转动法 ,在径向浓淡旋流煤粉燃烧器冷模试验台上 ,研究了在齿型和普通型两种中心扩口下旋流煤粉燃烧器出口气流的空气动力特性 .试验得到了冷态旋转射流的时均速度、湍流应力、偏斜因子的测量结果 .分析测量结果可见 ,齿型中心扩口下中心回流区直径减小 ,相对回流率较普通型中心扩口增加 2 0 % .同时在中心回流区边界附近湍流脉动强度明显提高 ,湍流正应力提高 1倍以上 ,湍流剪切应力提高 3倍以上 ,在主流区湍流瞬时速度的概率密度函数更快趋向于完全随机的高斯分布 .在齿型中心扩口下 ,出口射流的回流强度及湍流脉动强度的提高 ,有利于强化煤粉气流的燃烧反应

 
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