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虛擬節(jié)點(diǎn)有限元法解析滴灌支管水力學(xué)計(jì)
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Element Method for Hydraulic Design of Drip Irrigation Submain Units with Virtual Emitter System
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    摘要:

    滴灌支管和毛管組成的支管單元的水力學(xué)計(jì)算是滴灌管網(wǎng)水力學(xué)設(shè)計(jì)的關(guān)鍵環(huán)節(jié),。運(yùn)用虛擬節(jié)點(diǎn)有限元法和虛擬節(jié)點(diǎn)平均水頭損失有限元法解析支管單元的水力學(xué)計(jì)算,，可以計(jì)算出支管和每根毛管的水頭損失，同時(shí)顯著減少計(jì)算量,，研究結(jié)果為包含幾十萬(wàn)乃至上百萬(wàn)個(gè)滴頭的滴灌系統(tǒng)水力學(xué)設(shè)計(jì)提供了新的方法,。

    Abstract:

    The hydraulic calculation of drip irrigation submain units plays a key role in the system design. The finite element method with virtual emitters can compute the head loss of each submain and capillary. The ways to reduce computational errors were suggested by selecting a certain amounts of elements in order to meet drip irrigation design need. Moreover, finite element method with virtual emitters can reduce computational work and memory demands dramatically. The research method put forward in this study provides a new way for hydraulic design of large drip irrigation system.

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張志新,王建東,李鑫,趙月芬.虛擬節(jié)點(diǎn)有限元法解析滴灌支管水力學(xué)計(jì)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(3):99-102. Element Method for Hydraulic Design of Drip Irrigation Submain Units with Virtual Emitter System[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(3):99-102.

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