亚洲一区欧美在线,日韩欧美视频免费观看,色戒的三场床戏分别是在几段,欧美日韩国产在线人成

梯形渠道機(jī)翼形量水槽試驗(yàn)
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: