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基于自由曲面變形方法的離心泵葉片反問題方法研究
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國(guó)家自然科學(xué)基金資助項(xiàng)目（51109104）和“十二五”國(guó)家科技支撐計(jì)劃資助項(xiàng)目（2013BAF01B02）


New Inverse Method of Centrifugal Pump Blade Based on Free-form Deformation
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    摘要:

    提出了一種基于自由曲面變形(FFD)方法的離心泵葉片反問題新方法,。采用自由曲面變形方法對(duì)葉輪葉片形狀進(jìn)行控制，將葉片空間曲面嵌入到一個(gè)均勻剖分的三參數(shù)張量積控制體內(nèi)，移動(dòng)控制晶格點(diǎn)位置使控制體發(fā)生變形,，控制體內(nèi)的葉片曲面形狀隨之改變,。根據(jù)給定的葉片目標(biāo)載荷分布進(jìn)行葉片形狀的控制,，構(gòu)建控制晶格點(diǎn)的變形函數(shù),，根據(jù)葉輪內(nèi)三維湍流數(shù)值模擬結(jié)果與期望的葉片載荷分布規(guī)律控制晶格點(diǎn)的變形,，實(shí)現(xiàn)了由物理參數(shù)對(duì)葉片形狀的直接控制,。算例計(jì)算結(jié)果表明,，所提出的基于FFD方法的離心泵葉片反問題方法是可行的。

    Abstract:

    A new inverse method for centrifugal pump blade based on free-form deformation, which is used to parametric control of the pump blade shape, was proposed. The blade was implanted to a trivariate control volume which is equally subdivided by control lattices. The control volume can be deformed by moving the control lattices in it, thereupon the object is deformed. The parametric method for the blade shape according to the distribution of the blade load was proposed, and the lattices deformation function was constructed. The deformation of the lattices was implemented according to the three dimensional turbulent flow solve in pump and the desired load distribution of blade. At last, the blade shape was controlled by the physical parameters. The calculation case shows that the proposed inverse method based on FFD method is rational.

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張人會(huì),郭苗,楊軍虎,劉宜,李仁年.基于自由曲面變形方法的離心泵葉片反問題方法研究[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2014,45(1):84-88. Zhang Renhui, Guo Miao, Yang Junhu, Liu Yi, Li Rennian. New Inverse Method of Centrifugal Pump Blade Based on Free-form Deformation[J]. Transactions of the Chinese Society for Agricultural Machinery,2014,45(1):84-88.

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  • 收稿日期:2013-08-26
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  • 在線發(fā)布日期: 2014-01-03
  • 出版日期: 2014-01-03
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