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

葉片包角對(duì)離心泵性能的影響?yīng)?/div>
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:


Relationship between Wrap Angle of Impeller and Performance of 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:

    在保證離心泵主要幾何參數(shù)不變的前提下,，使用Hermite插值方法對(duì)葉片包角為90°,、120°、150°和180°的4個(gè)葉輪進(jìn)行葉片繪型,。數(shù)值模擬分析了不同葉片包角與離心泵性能的關(guān)系,。結(jié)果表明,，葉片包角因改變?nèi)~輪出口相對(duì)速度液流角而使離心泵揚(yáng)程和功率特性發(fā)生變化,，其效果與改變?nèi)~片出口安放角類似,。葉片包角增大的同時(shí)葉輪流道內(nèi)的脫流與漩渦也隨之減小,，流動(dòng)更貼近葉片型線,，但葉輪流道內(nèi)的摩擦損失也隨之增大，離心泵存在一個(gè)使其效率最高的最佳葉片包角,。

    Abstract:

    The influence of relationship between wrap angle of impeller on performance of a pump was analyzed with the same main dimensions of centrifugal pumps unchanged. Blades were shaped using Hermite interpolation method. The wrap angle of impellers used in this investigation is 90°, 120°, 150°and 180° respectively. The result of numerical simulation indicates that the wrap angle changes the head and power characteristics by changing the relative velocity angle in impeller outlet. The effect of the different wrap angles is similar to that of the different impeller outlet blade angles. The bigger the wrap angle is, the smaller the separation and vortex in impeller passages are. With the wrap angle increases, the streamlines and blade profiles are getting similar, but the friction loss in impeller passages is getting large. So there exists an optimum wrap angle that corresponds to the highest efficiency of a centrifugal pump.

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

張翔,王洋,徐小敏,王洪玉.葉片包角對(duì)離心泵性能的影響?yīng)琜J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2010,41(11):38-42. Relationship between Wrap Angle of Impeller and Performance of Pump[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(11):38-42.

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