| 喷孔为节点式微喷带的水力特性初步研究 |
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| 引用本文： | 郑迎春,杨路华,翟宁,康国芳.喷孔为节点式微喷带的水力特性初步研究[J].河北农业大学学报,2009,32(2). |
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| 作者姓名： | 郑迎春 杨路华 翟宁 康国芳 |
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| 作者单位： | 河北农业大学,城乡建设学院,河北,保定,071001 |
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| 基金项目： | 河北省水利厅资助项目 |
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| 摘 要： | 根据节点式微喷带喷水特点,出水孔以组为单位集中分布,每组喷水孔称为一个节点。根据孔口出流公式导出微喷带喷水孔的压力-流量公式;同时把微喷带看成由不同流量的相同管径短管连接成的管道,在每段管道上用达西—威斯巴赫公式分流态计算其沿程压力损失,在理论分析的基础上加以室内试验数据验证,由此导出微喷带的沿程压力分布公式,并计算沿程出水孔的出流量。对微喷带的生产、使用提供理论支持。
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| 关 键 词： | 微喷带 沿程压力损失 流态 短管 |
Primary study on hydraulic characteristics of punched thin-soft tape for micro-spraying |
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| ZHENG Ying-chun,YANG Lu-hua,ZHAI Ning,KANG Guo-fang.Primary study on hydraulic characteristics of punched thin-soft tape for micro-spraying[J].Journal of Agricultural University of Hebei,2009,32(2). |
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| Authors: | ZHENG Ying-chun YANG Lu-hua ZHAI Ning KANG Guo-fang |
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| Institution: | College of Urban and Rural Construction;Agricultural University of Hebei;Baoding 071001;China |
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| Abstract: | Based on characteristics of punched thin-soft tape for Micro-spraying and little hole's channel,its hydraulic characteristics were analyzed.A new method is proposed to calculate the losing water head with different formulae down the different parts of punched thin-soft tape for Micro-spraying.The punched thin-soft tape for micro-spraying is divided into short pipes,with each group of spraying holes as a joint.Different sections have different flux and different water modality.So water head loss information ... |
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| Keywords: | punched thin-soft tape for micro-spraying water head losing water modality short |
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