hydraulic diameter meaning in English
水力直径
水压直径
液力直径
Examples
- The experimental model is a rectangular section of 15 . 2 187mm ~ 2 , which is composed of two aluminum plates . the angles between the internal netted rib turbulators and the flow direction are 45 ? for the one plate and 60 ? for the other , or both 45 ? for two plates . in the experiment , the re numbers changes from 0 . 4 10 ~ 4 1 . 5 10 ~ 5 , rib width - to - pitch are 0 . 25 , 0 . 3 and 0 . 5 , rib width - to - height are 0 . 25 , 0 . 3 and 0 . 5 , the rib height - to - hydraulic diameter ratio is 0 . 246
主要研究了在通道进口截面积(即无肋处的截面积) a为15 . 2 187mm ~ 2 、肋高与通道当量直径之比e / de等于0 . 246 ，实验雷诺数范围在0 . 4 10 ~ 4 1 . 5 10 ~ 5之间的情况下，雷诺数re 、肋向角a 、肋宽与肋高之比t / e和肋宽与肋间距之比t / p等参数对通道强化传热与流动阻力特性的影响。 - Reynolds numbers ( based on average velocity at passage inlet and hydraulic diameter of the passage ) are changing from 20000 to 80000 and the extraction ratios ( suction ratios , sr ) are changing from 0 . 30 to 0 . 60 for each test model . so the influences of reynolds numbers , suction ratios and etc . on the discharge coefficients and pressure loss characterist ics are also presented . flow fields of typical passages are visualized with the flow visualization techniques and measured with hot - wire anemometer
对每一种通道结构，实验在不同通道进口雷诺数( re = 20000 、 40000 、 60000 、 80000 )和不同通道总出流比( sr = 0 . 30 、 0 . 45 、 0 . 60 )下进行，以研究这两个流动参数及其它相应变化的参数(气膜孔的雷诺数re _ h 、气膜孔与通道的动量比i等)对出流特性和流阻特性的影响规律。