雷诺数

The influence of pH value in the slurry is undulant without the stable trend. A model of gas-liquid mass transfer is obtained by measuring the inlet and outlet SO2 concentration of gas.

通过脱硫塔进出口气相浓度分布规律和液相、气相平均浓度的测量，建立了脱硫塔内气液传质的数学模型，得到：在液相喷射雷诺数Rel的值一定时，传质系数随着气相空截面雷诺数Reg增加而增加。

The Reynolds number has different influence on the pressure coefficient and discharge coefficient under different velocity ratio.

在小速比下，雷诺数对压力系数、流量系数的影响较小，在大速比下，雷诺数对压力系数、流量系数的影响较大。

In the recent 10 years, at the three special fields of dynamic aerodynamics, although the circumferential Reynolds number gap between wind tunnel free flight and its corresponding real flight is as high as one or two magnitudes, wind tunnel free flight experiment results succeed in predicting or reproducing the dynamic aerodynamic characteristics in the three special fields, which appear in the real flight phase producing severe effects on flight security and flight performance.

近10余年来，在3个动态气动专题领域内，地面风洞自由飞实验与对应的天空飞行器的绕流雷诺数虽然相差1～2个量级，但风洞自由飞实验结果多次预测或再现了天空飞行器出现的对飞行安全、飞行性能产生严重影响、其它地面风洞实验方法难以预测或再现的这3个专题领域内的动态气动特性，这至少为3个专题领域内天地动态气动相关中的雷诺数影响，提供了一个新的理解。

Samely the conversional Reynolds number which show the flow transform from transitive state to turbulent state Reb is correlated with the structures of the fin too.

结果表明：在低雷诺数下，肋叉排列三维内肋管内的流型就由层流向过渡流转变，其转换雷诺数与肋形结构相关：Recr=3.3602-2.380-1.646-1.352-3.097。

The conclusion is that sheering and radial stress are dominant in viscosity shearing force, and that Reynolds stress is larger than viscosity stress in turbulent flow, and the multiple is the Reynolds number.

由分析可知在粘性应力中，切向和径向剪切应力占主导地位；而在湍流条件下，雷诺应力是粘性应力的若干倍数，此倍数在量级上即为雷诺数。

In the ease of large Reynolds number, Reynolds stress turbulence model and computational fluid dynamics was used to simulate the cone valve flow field and investigate emphatically the effect of structural parameters, inlet pressure, outlet pressure, and valve opening on the flow field within cone valve.

在大雷诺数下应用雷诺应力湍流模型和计算流体力学方法对锥阀的内部流场进行数值仿真计算，着重研究阀的结构参数、入口压力、出口压力、阀口开度等对锥阀流场的影响。

Result The skewed parabolic profile is observed in CCA under 1:60 curvature and physiological average Reynolds number. As curvature and Reynolds number increase, the middle of horizontal profile appears sunken and the vertical profile is M-shaped. There are different profile shapes in different localities along the curved pipe.

结果 当颈总动脉的曲率等于1：60 时，在人生理平均流动雷诺数条件下，颈总动脉的速度剖面可用偏斜的抛物面来近似；当颈总动脉曲率增大或流动雷诺数增大时，弯曲平面上的速度剖面中部出现下凹趋势，垂直方向上出现M型速度剖面；沿管轴不同位置上的速度剖面形状不同。

At the same Reynolds number, the pressure loss coefficient of micro nozzle is higher than that of the micro diffuser.

模拟结果显示，微喷嘴/扩大器的压损系数会随著雷诺数的增加而减少，但压损系数比反而随著雷诺数的增加而提高。

Since the interface is treated as an internal flow field so it can accurately keep the conservation of flow variables on the sliding interface. Both laminar and turbulent unsteady rotor/stator interaction of a turbine stage with arbitrary pitch ratio are calculated successfully.

成功地计算了小雷诺数工况下具有任意栅距比的轴流动/静相干叶排内部非定常层流流动，及采用标准K-ε两方程模型对较大雷诺数工况下动/静相干轴流叶排内部非定常紊流流动进行了数值分析。

It is indicated that this loss will not change with the increase of the Reynolds number but the intensity of the passage vortex increases with the decrease of the Reynolds number. The tip leakage flow will weaken with the increase of the passage vortex because of the interaction between the passage vortex and the tip leakage vortex, and the position of the tip leakage vortex is more close to the middle of the passage. In addition, the distributions of the total pressure loss and the flow angle at the exit of the cascade are influenced by the intensity and the position of the tip leakage vortex.

结果表明：对于间隙存在造成的流动损失，数值模拟结果与实验结果及 Denton的预测值都十分接近，基本上不随着雷诺数的变化而变化；但是，随着雷诺数的减小，通道涡增强；间隙泄漏涡在和通道涡的相互作用中，强度减弱，在叶栅出口处的位置更加靠近中叶展；出口处的总压损失和气流角的分布也由于间隙泄漏涡强度和位置的变化而发生改变。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。