ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

梯形渠道機(jī)翼形量水槽試驗(yàn)
CSTR:
作者:
作者單位:

作者簡(jiǎn)介:

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:


Experiment on Airfoil-shaped Measuring Flume in Trapezoidal Canal
Author:
Affiliation:

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問(wèn)統(tǒng)計(jì)
    • |
  • 參考文獻(xiàn)
    • |
  • 相似文獻(xiàn)
    • |
  • 引證文獻(xiàn)
    • |
  • 資源附件
    • |
  • 文章評(píng)論
    摘要:

    基于Hager對(duì)圓錐筒及圓柱體量水槽測(cè)流原理分析，推求出梯形渠道機(jī)翼形量水槽在自由出流時(shí)的流量理論計(jì)算公式,，指出流量校正系數(shù)可由相對(duì)水頭確定,。選擇6種收縮比進(jìn)行了一系列室內(nèi)模型試驗(yàn)，并根據(jù)試驗(yàn)數(shù)據(jù)建立了相對(duì)流量與相對(duì)水頭的無(wú)量綱關(guān)系式,。結(jié)果表明,，相對(duì)流量與相對(duì)水頭具有良好的相關(guān)關(guān)系，流量計(jì)算最大相對(duì)誤差為±3.5%,，該量水槽臨界淹沒(méi)度可達(dá)0.90,，控制斷面收縮比為0.372～0.585時(shí)可得到較好的量水效果。

    Abstract:

    Theoretical formula for discharge calculation of airfoil-shaped measuring flume in trapezoidal canal under free condition was proposed, based on the analysis on principle of circular cone and cylinder measuring flume which is presented by Hager. The coefficient of discharge correction is determined by relative head. A serial of indoor experiments about flume was carried out with 6 kinds of contraction ratios. Non-dimensional correlation between relative flow rate and relative head was developed according to experimental datum. The results show that there is a good relationship between relative flow rate and relative head. The maximum relative error of discharge calculation is less than ±3.5%, and the maximum submergence limit is 0.90. A preferable water measuring performances is obtained when the contraction ratio ranges from 0.372 to 0.585. 

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

潘志寶,呂宏興,張曉斐,雒天峰,敬向鋒.梯形渠道機(jī)翼形量水槽試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(12):97-100.Experiment on Airfoil-shaped Measuring Flume in Trapezoidal Canal[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(12):97-100.

復(fù)制
分享
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期:
文章二維碼