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

水泵水輪機(jī)泵工況轉(zhuǎn)輪流場(chǎng)分析
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:


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:

    基于三維定常N-S方程和標(biāo)準(zhǔn)k-ε湍流模型，采用貼體坐標(biāo)、結(jié)構(gòu)化網(wǎng)格和基于有限體上的有限元法，對(duì)400 m水頭水泵水輪機(jī)模型轉(zhuǎn)輪泵工況進(jìn)行內(nèi)部流場(chǎng)模擬，通過(guò)轉(zhuǎn)輪內(nèi)部有限體上的速度、壓力積分求解轉(zhuǎn)輪揚(yáng)程、凈正吸出高度和效率，從而預(yù)測(cè)轉(zhuǎn)輪泵工況的能量、揚(yáng)程及空化性能，并對(duì)轉(zhuǎn)輪的內(nèi)部流速分布、渦分布和葉片壓力分布進(jìn)行了分析研究。

    Abstract:

    Based on 3-D-steady Navier-Stokes equations with the standard k-ε turbulence closure models, the structure mesh with fitted body coordinate and the finite element based finite volume method, the 400 meters head pump-turbine runner inner flow was simulated in the pump mode. The head, efficiency and net positive suction head of the pump-turbine have been calculated through integrating the velocity and pressure of the finite volume in the runner. The velocity, vorticity and the blade pressure distribution rules were all discussed. The meridional velocity near the leading edge of the blade had the “S” shape along the radius, and that near the trailing edge of the blade had the “M” shape along the radius. The vorticity mainly appeared on the blade, crown and band of the runner. 

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

張?zhí)m金,紀(jì)興英,常近時(shí).水泵水輪機(jī)泵工況轉(zhuǎn)輪流場(chǎng)分析[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2008,39(4):69-72.[J]. Transactions of the Chinese Society for Agricultural Machinery,2008,39(4):69-72.

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: