艾青林,胥芳,陈琦,陈教料,王鹏.植物木质部导管梯状穿孔板流动阻力特性研究[J].农业机械学报,2011,42(8):143-148,110.
Ai Qinglin,Xu Fang,Chen Qi,Chen Jiaoliao,Wang Peng.Flow Resistance Characteristics of Scalariform Perforation Plates in Plant Xylem Vessels[J].Transactions of the Chinese Society for Agricultural Machinery,2011,42(8):143-148,110.
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植物木质部导管梯状穿孔板流动阻力特性研究   [下载全文]
Flow Resistance Characteristics of Scalariform Perforation Plates in Plant Xylem Vessels   [Download Pdf][in English]
  
DOI:10.3969/j.issn.1000-1298.[year].[issue].[sequence]
中文关键词:  木质部  穿孔板  流动阻力特性  流阻系数
基金项目:国家自然科学基金资助项目(30771247)
作者单位
艾青林 浙江工业大学 
胥芳 浙江工业大学 
陈琦 浙江工业大学 
陈教料 浙江工业大学 
王鹏 浙江工业大学 
中文摘要:简述了目前国内外植物木质部穿孔板流体建模研究概况,对穿孔板孔口流动特性进行了数学建模,利用Fluent软件对不同几何结构的穿孔板孔口附近的水分流动进行流场仿真,通过计算和分析仿真结果,研究了穿孔板倾斜角、导管内径、穿孔板孔数、等效孔宽对穿孔板流阻系数的影响规律。结果表明,当其他参数设定时,倾斜角增大,平均流量不变,穿孔板两侧的总压降及流阻系数先减小后增大;导管内径增大,平均流量增大,总压降减小,流阻系数减小;孔数增加,平均流量不变,穿孔板总压降增加,流阻系数也增加;等效孔宽增大,平均流量保持不变,总压降与流阻系数均减小。
Ai Qinglin  Xu Fang  Chen Qi  Chen Jiaoliao  Wang Peng
Zhejiang University of Technology;Zhejiang University of Technology;Zhejiang University of Technology;Zhejiang University of Technology;Zhejiang University of Technology
Key Words:Xylem  Perforation plates  Flow resistance characteristics  Flow resistance coefficient
Abstract:Development of the flow model of scalariform perforation plates was introduced from domestic country to foreign country. The mathematics model of scalariform perforation plates was established. The simulation model of the flow in the region of scalariform perforation plates with different structures was established through Fluent software.From calculating and analyzing the simulation result, the influences of inclination angle of perforation plates, inner diameter of vessel, hole number, equivalent hole width to flow resistance coefficient were studied. The results showed that when other parameters were initialized, with the indination angle increasing, average flow was invariant, the drop of pressure on both side of perforation plates and flow resistance coefficient decreased at the beginning, and increased later. With the value of inner diameter increasing, average flow increased, the drop of pressure and flow resistance coefficient decreased. With hole number increasing, average flow was invariant, the drop of pressure and flow resistance coefficient increased. With equivalent hole width increasing, average flow was invariant, the drop of pressure and flow resistance coefficient decreased.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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