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內(nèi)充氣吹式油菜精量排種器氣室流場仿真與試驗
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高等學(xué)校博士學(xué)科點專項科研基金資助項目(20090146110016),、國家油菜產(chǎn)業(yè)技術(shù)體系專項資助項目（CARS-13）和中央高校基本科研業(yè)務(wù)費（2011PY021）


Simulation and Experiment of Inside-filling Air-blow Precision Metering Device for Rapeseed
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    摘要:

    針對機械式排種器易發(fā)生堵塞造成漏播的問題,，設(shè)計了一種內(nèi)充氣吹式油菜精量排種器,。以ANSYS/CFX為工具建立氣室流場仿真模型,，以氣室有無平衡出氣孔為試驗因素，對氣室內(nèi)氣流場進(jìn)行了仿真分析,。仿真結(jié)果表明,，有平衡氣孔的氣室壓力波動比無平衡氣孔小93 Pa。臺架試驗表明,，無氣吹作用,、無平衡氣孔氣室氣吹作用和有平衡氣孔氣室氣吹作用3種狀態(tài)下，漏播指數(shù)分別為14.4%,、4.4%和2.4%,，排種器的合格指數(shù)分別為66.8%、78.4%和82.0%，在氣吹作用下排種器堵塞漏播問題得到明顯改善,。

    Abstract:

    A prototype of inside-filling air-blow seed-metering device was developed to overcome the deficiency of mechanical precision metering device with high rate of cell blocked and seeds absent. Simulation analysis of flow in the prototype was carried out with software ANSYS/CFX. The simulation results showed that the pressure fluctuation in the prototype with stomata was fewer 93Pa than it without stomata. The laboratory test results indicated that seeding performances of the seed-metering devices with stomata was much better than it without stomata: quality of feed index and miss index of the devices without airblowing drop, with no-stomata air-blowing drop and with stomata air-blowing drop was 66.8%, 78.4 %, 82.0% and 14.4%, 4.4%, 2.4%, respectively.

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廖慶喜,楊波,李旭,廖宜濤,張寧.內(nèi)充氣吹式油菜精量排種器氣室流場仿真與試驗[J].農(nóng)業(yè)機械學(xué)報,2012,43(4):51-54. Liao Qingxi, Yang Bo, Li Xu, Liao Yitao, Zhang Ning. Simulation and Experiment of Inside-filling Air-blow Precision Metering Device for Rapeseed[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(4):51-54.

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  • 在線發(fā)布日期: 2012-04-18
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