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

大型雙吸離心泵葉輪動應(yīng)力特性
CSTR:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項目:

國家自然科學基金資助項目（51079151,、50779070）;北京市自然科學基金重點資助項目（3071002）;高等學校博士學科點專項科研基金資助項目（0100008110012）


Dynamic Stress of Large Double-suction Centrifugal Pump Impeller
Author:
Affiliation:

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計
    • |
  • 參考文獻
    • |
  • 相似文獻
    • |
  • 引證文獻
    • |
  • 資源附件
    • |
  • 文章評論
    摘要:

    基于順序流固耦合理論,，以雙吸泵內(nèi)部非定常流場信息作為力學邊界條件,，采用有限元方法，對一臺大型雙吸離心泵葉輪進行了瞬態(tài)動力學分析。主要考察了5個流量工況(0.6Qd,、0.8Qd,、Qd、1.1Qd,、1.2Qd)下的葉輪動應(yīng)力特征,。結(jié)果表明，在不同流量工況下葉輪表面動應(yīng)力分布趨勢基本相似,，最大應(yīng)力點出現(xiàn)在葉片進口或出口邊靠近前蓋板的根部區(qū)域；在小流量(0.6Qd)工況下,，動應(yīng)力水平最高,；葉片動應(yīng)力隨時間呈周期性變化；動應(yīng)力頻率成分主要為葉輪轉(zhuǎn)頻及其諧頻,。

    Abstract:

    The dynamic stress analysis for a large double-suction centrifugal pump impeller was presented by using the finite element method. This analysis was based on the sequential fluid-structure interaction theory. The pressure pulsation obtained from flow simulation by using CFD code was set as the force boundary condition. The dynamic stress characteristics of the impeller under five flow conditions (0.6Qd, 0.8Qd, Qd, 1.1Qd, 1.2Qd) were given. The results showed that the maximum stress of the impeller appeared at trailing edge or leading edge region of the blade near shroud. The stress distributions on impeller blade surfaces under different flow rate conditions are similar to each other. The level of dynamic stress under 0.6Qd is the highest. The dynamic stress varies periodically with the impeller rotating. It is also found that the fundamental frequencies of the dynamic stress are the rotating frequency and its harmonic frequency.

    參考文獻
    相似文獻
    引證文獻
引用本文

高江永,王福軍,瞿麗霞,劉竹青,戚蘭英.大型雙吸離心泵葉輪動應(yīng)力特性[J].農(nóng)業(yè)機械學報,2012,43(1):42-47,52. Gao Jiangyong, Wang Fujun, Qu Lixia, Liu Zhuqing, Qi Lanying. Dynamic Stress of Large Double-suction Centrifugal Pump Impeller[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(1):42-47,52.

復(fù)制
分享
文章指標
  • 點擊次數(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: 2012-01-12
  • 出版日期:
文章二維碼