The effect of the pressure gradient on critical reynolds number is also displayed and the influence rule of the different pressure fields on the flow stability is exploited 还研究了压力梯度对临界雷诺数的影响,探讨了不同压力场对流动稳定性作用的规律性。
The variation of the width , the length scale in the streamwise direction and the persisting time of low - speed streaks with re , have similar relations to the spacing 低速带宽度、纵向尺度及持续时间等随摩阻雷诺数的变化规律与低速带带间距的变化规律类似。
The results indicated with the re raising , the rectangle channel ' s heat transfer enhanced gradually , which channel installed the baffle on its above and below 实验结果表明,上下壁面安装折流板的矩形通道中,随着来流雷诺数re的增加,通道换热效果逐步增强。
Then , the program is used to simulate the flow across the backward - step , and the conclusion is testified that the circumfluence length is related to the reyonlds number 同时,利用程序对后台阶绕流流动进行计算,验证了后台阶绕流回流长度和雷诺数有关的结论。
The friction factor of laminar flow has decreased into about 3 / 4 of the theoretic value , and the static pressure distribution along the length was nonlinear 层流区摩擦系数约减小为常规理论值的3 4 ,沿程压力分布呈现非线性。在雷诺数较大时,可压缩性效应明显。
Furthermore , the streamlines for reynolds numbers up to 9500 display the evolution with time of flow , and capture the possible flow pattern at different times 显示出来的最高雷诺数为9500的流线分布,准确地描述了流动随时间的变化过程,捕捉了可能存在的运动模式。
Film hole discharge coefficients at first increase with the increase of film hole reynolds number and then keep almost constant when film hole reynolds number exceeds 15000 流量系数随气膜孔雷诺数的增大而增大,当雷诺数达到15000以后,流量系数随雷诺数的变化变小。
The method and program for exact solution of coefficient re and exponential 4 in heat transfer rule equation in heat exchanger performance test were presented 摘要介绍了在换热器传热性能测试中,准确求解传热准则方程式中雷诺数系数和指数4参数的数据处理方法与处理程序。