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

軸流泵葉輪出口流場(chǎng)實(shí)
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:


of the Flow Field at the Outlet of Impeller of Axial-flow Pump
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:

    運(yùn)用球形五孔探針對(duì)自行設(shè)計(jì)的軸流模型泵3種工況下葉輪出口流場(chǎng)進(jìn)行了測(cè)量,，得到葉輪出口絕對(duì)速度的周向,、軸向、徑向速度分量和速度環(huán)量分布,。測(cè)量結(jié)果分析表明：葉輪出口處流場(chǎng)呈螺旋形向外運(yùn)動(dòng)趨勢(shì),；在最優(yōu)工況下,，出口旋轉(zhuǎn)動(dòng)能占出口總動(dòng)能的34％左右,，其比例隨著流量的增加逐漸減??；絕對(duì)速度的徑向分量較小，軸向分量隨著流量的增加而加大,，和設(shè)計(jì)假設(shè)相吻合,；葉輪出口速度環(huán)量從輪轂到輪緣呈逐漸下降的趨勢(shì),，設(shè)計(jì)時(shí)應(yīng)增加輪緣處的圓周分量,，減小輪轂處的圓周分量。運(yùn)用球形五孔探針測(cè)量三維流場(chǎng)中的速度分量和速度環(huán)量分布,，具有適用性強(qiáng),、方法簡(jiǎn)單、測(cè)量精度較高的優(yōu)點(diǎn),。

    Abstract:

    The flow field at the outlet of impeller in the designed axial-flow pump was measured by using the five-hole probe. Three velocity components and circulation curves were obtained. The measured results show that the flow field at the outlet of impeller is a spiral movement. Under the optimum condition, the rotary kinetic energy occupies 34％ of the total outlet kinetic energy and decreases with the increase of the flux. Accompanied by the small radial velocity, the axial velocity increases with the flow intensifying. The velocity circulation decrease from the hub to the flange, wherefore the more circular velocity at the flange and the less at the hub are needed. The 3-D velocity distribution of flow field can be measured accurately by the probe. This method has the merits of simple operation and well applicability.

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

李忠,楊敏官,王春林.軸流泵葉輪出口流場(chǎng)實(shí)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(9):94-97. of the Flow Field at the Outlet of Impeller of Axial-flow Pump[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(9):94-97.

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